XZ3 WIFI and Network connection problem - Sony Xperia XZ3 Questions & Answers

Hi Guys, could you please help me out? A few weeks ago my XZ3 started to act weird. It working perfectly, and after a random time, suddenly its losing both the wifi and mobile network connection (bluetooth is OK). Sometimes a simple restart solves this, but other times its not helping. I tried factory reset, but the problem still occurs. Could it be somehow software related or it must be a harware issue? Any information could help a lot! Thank your very much in advance.

svep said:
Hi Guys, could you please help me out? A few weeks ago my XZ3 started to act weird. It working perfectly, and after a random time, suddenly its losing both the wifi and mobile network connection (bluetooth is OK). Sometimes a simple restart solves this, but other times its not helping. I tried factory reset, but the problem still occurs. Could it be somehow software related or it must be a harware issue? Any information could help a lot! Thank your very much in advance.
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i got the same problem. and still stuck till now. did you found any solution?

Hardware issue.

svep said:
Hi Guys, could you please help me out? A few weeks ago my XZ3 started to act weird. It working perfectly, and after a random time, suddenly its losing both the wifi and mobile network connection (bluetooth is OK). Sometimes a simple restart solves this, but other times its not helping. I tried factory reset, but the problem still occurs. Could it be somehow software related or it must be a harware issue? Any information could help a lot! Thank your very much in advance.
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Click to collapse
It happened to me a few months ago. Have you trying to turn airplane mode on?

J.M.Siyath said:
Hardware issue.
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what part of hardware causes this issue? is it repairable?

aizazkhan666 said:
what part of hardware causes this issue? is it repairable?
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issue may be in chipset so repairing is hard.
I gave it to seller then he sent me another xz3 phone.
now I don't have such issue.
I think it is a manufacturing issue, few phones has this same issue in all Xperia models like xz2,xz3, xperia 1....

J.M.Siyath said:
issue may be in chipset so repairing is hard.
I gave it to seller then he sent me another xz3 phone.
now I don't have such issue.
I think it is a manufacturing issue, few phones has this same issue in all Xperia models like xz2,xz3, xperia 1....
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Click to collapse
i got it fixed from a local repair shop. The issue is caused due to some loose components on the motherboard. There are a bunch golden pins around the edges of the main board, the repair guy called them "signal boosters". i don't know what they're actually called. They're all connected to two main signal boosters right in the middle of the motherboard.

UPDATE: it's the plastic middle frame of the phone!! i finally figured it out.

svep said:
Hi Guys, could you please help me out? A few weeks ago my XZ3 started to act weird. It working perfectly, and after a random time, suddenly its losing both the wifi and mobile network connection (bluetooth is OK). Sometimes a simple restart solves this, but other times its not helping. I tried factory reset, but the problem still occurs. Could it be somehow software related or it must be a harware issue? Any information could help a lot! Thank your very much in advance.
Click to expand...
Click to collapse
I have the same issue.

aizazkhan666 said:
UPDATE: it's the plastic middle frame of the phone!! i finally figured it out.
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Click to collapse
What exactly did you do? replace the plastic middle frame? or repair it? how?

jimly_21 said:
What exactly did you do? replace the plastic middle frame? or repair it? how?
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Click to collapse
I'm sorry it wasn't the middle frame either. the issue came back after a couple of weeks, mostly when phone got hot under heavy use. i figured when i pushed hard on the side of the phone where sim card lies, the phone would lose signal for a sec or two and then come back to normal
I finally managed to fix my phone somehow it hasn't dropped signal even once in two months. i haven't been able to pinpoint what exact component is malfunctioning that's why I'm going to list every little thing i did..
it's definitely one of the metal contact points on the edges of the motherboard near the sim card tray that connect with the phones casing to boost the wifi and 4g signal. i put a small piece of medical tape on top of each contact point near the sim card tray to completely block them off. ( I've marked in the attaced pic exactly which contact points you have to block )
I've also removed the plastic dummy sim holder that sits just below sim card tray to fill the gap between metal sim holder and phones body. put a piece of paper medical tape there instead. put a small piece of paper in the top right corner of phone housing so that motherboard would stay a little above the housing when you screw it (see pic)
make sure motherboard screws aren't too tight
Don't worry it has little to no effect on phones signal reception, you're only blocking the sub antenna

aizazkhan666 said:
I'm sorry it wasn't the middle frame either. the issue came back after a couple of weeks, mostly when phone got hot under heavy use. i figured when i pushed hard on the side of the phone where sim card lies, the phone would lose signal for a sec or two and then come back to normal
I finally managed to fix my phone somehow it hasn't dropped signal even once in two months. i haven't been able to pinpoint what exact component is malfunctioning that's why I'm going to list every little thing i did..
it's definitely one of the metal contact points on the edges of the motherboard near the sim card tray that connect with the phones casing to boost the wifi and 4g signal. i put a small piece of medical tape on top of each contact point near the sim card tray to completely block them off. ( I've marked in the attaced pic exactly which contact points you have to block )
I've also removed the plastic dummy sim holder that sits just below sim card tray to fill the gap between metal sim holder and phones body. put a piece of paper medical tape there instead. put a small piece of paper in the top right corner of phone housing so that motherboard would stay a little above the housing when you screw it (see pic)
make sure motherboard screws aren't too tight
Don't worry it has little to no effect on phones signal reception, you're only blocking the sub antenna
Click to expand...
Click to collapse
Bro i followed your method but problem is still occur. What can i do to fix this?

[email protected] said:
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Same problem here...no wifi or gsm signal....i cleaned the contacts on mother board with alcohol but still nothing. Cant find motherboard to buy either. Just stupid.

kojak989 said:
Same problem here...no wifi or gsm signal....i cleaned the contacts on mother board with alcohol but still nothing. Cant find motherboard to buy either. Just stupid.
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So what you did at the end?
Any update on the matter?

I was able to partially solve my problem with my phone, I took out the black antenna frame and very carefully placed transparent scotch tape (because it´s thinner than medical tape) in all the contacts that are marked in red in the atached picture but now I´m thinking that I shouls have placed tape also on the places marked with green.
So what change I experienced on my phone with this method?
well the phone now has Network and wifi signal all the time and very ocassionaly it does lose the network and wifi signal for a second but when this happen the phone does not say that there is no sim card and does not freeze and restart, it just recovers signal by itself and I can continue using the phone.

Related

kaiser repair problem

so i cracked my LCD a couple weeks back..today i recieved a replacment LCD from htclcd.com ...followed the instructions from the site..now i turn on my phone..and everything works perfectly..exept it cant find a signal anymore...seems to recognize the sim card...everything else works fine..just no signal...where could the problem lie? any suggestions? thanks in advance!
I would be very suprised if the lcd has caused this issue, have you tried a manual network selection yet?
It is likely that you have accidently disconnected or damaged antenna or connection to the antenna. I'd try to disassemble, examine visually that all parts are OK and reassemble the phone.
thats that i was thinking..but i dont know where the antenna is located in the phone so i dont even know where to begin to look
Hi stolli,
please let me know if you could repair your phone I have the same breakdown for the same reasons.
thank you
is there a way to replace the keyboard or fix the problem somehow?
It may just be the Keyboard FPC connector is not inserted firmly enough. See pages 21 and 33 of the manual.
www.mikechannon.net
Mike
Hi, it seems that all lugs looks good, but it is not easy to see if contacts are OK, Wlan, GPS, Bluetooth are OK but not GSM
I tried to connect via VOIP, voip is connected but i always have no services??????
green led is flashing, is it for GSM, wifi or dial?
stephlight said:
Hi, it seems that all lugs looks good, but it is not easy to see if contacts are OK, Wlan, GPS, Bluetooth are OK but not GSM
I tried to connect via VOIP, voip is connected but i always have no services??????
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did you insert the lugs from the battery side first? the contacts are the gold pieces...if they are intact they should be fine..when you put the tilt backtogether did you put it together firmly, tighting all the bolts? also make sure flight mode isnt on
stolli said:
did you insert the lugs from the battery side first? the contacts are the gold pieces...
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Yes, I also slightly recovered "lugs" that looks a bit twisted.
Do you with one is used for GSM?
stolli said:
also make sure flight mode isnt on
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I changed several times mode phone to flight to test the line but still nothing.
I will work in Paris tomorrow, I'll test the gsm signal will be better , but on my other phone with the same Sim all is good.
Thanks.
the reason why the lugs are neceassy is to hold the casing firmly down so the gold connecters touch...make sure that the casing is tightened firmly down..and maybe lift the gold connecters on the main casing a little bit so they stick out more (thats what i did)..make sure not to break them tho..
The problem must come an other part, the lugs are good.
I had great difficulty connect to GSM in Paris yesterday.
I have disassembled it again checked and reassembled but nothing new.
thanks for your help.
Hello
I killed my Kaiser by flashing a Touch Diamond ROM to it.
Sent it to repair service and they say the Mainboard needs to be replaced,but the price for repair is ultragious .
I realy need the device,it was a big help in my confused life style.
Can anyone tell me how can i fix it myself. Or where i can buy a mainboard. Or where can i send the device to repair for a cheaper service?
Thanks in advance for all your help guys.
Some of the keys on my keyboard are dead, any clue? Disassembled several times with no luck...
Doh... looks like the keys are gone.
WOW! It works, when I gave up! Ironic! DD
Ok, so if there happens to be others with the same issue.
Make sure when you connect the golden keyboard connector that the black thin line on it gets positioned exactly where the brown lock ends.

SIM not recognized when Tilt is shut..

This problem came out of nowhere. I have been using the same ROM for several months (version: 3.29.707.0 WWE) and have not installed anything new to the phone. If I slide the phone shut, it loses it's signal (in an area where I have plenty of bars). When I open the comm manager, turn off the phone service, then turn it back on I get the message saying that my SIM card is missing. When I slide the phone open and repeat the process of opening the Comm Manager and turning off the phone service then back on, everything is fine. Does anyone know if this is a hardware or software problem. I am going to re-flash shortly and see if that changes anything.
EDIT: I have just flashed to NGY Professional v1.2 - M2D Fix. Everything works fine when the device is slid open. As soon as I close the phone, it tells me to insert a SIM card. While the phone is open, I started the SIM manager program, it listed all numbers saved to my card. I then slid the phone closed. It kept the numbers displayed until I exited the program. HELP PLEASE!!!!
Kid gloves / TLC
Orflin, I have had similar trouble with my Tilt, but yours seems a bit more well behaved. In my case, the problem was physical. Your problem seems too perfect to not be software or firmware related. At any rate, perhaps my take will help:
Shortly after receiving my Tilt, my device began to intermittently lose power (resulting in a soft reset) or lose signal upon opening the device. I took it to a retail location and a representative was able to reproduce the issue. She then opened the device VERY slowly while pressing firmly on the action. This steady transition allowed the device to function with nary a hiccup until my replacement unit arrived that did not exhibit this annoying behavior.
I recently re-lived this when I decided to purchase an oversized battery with a custom backplate to replace my scorching hot, aging standard battery. Outside warranty, I needed a solution. I discovered that my new battery was ever-so-slightly slimmer in the dimension that forces terminal contact. I used cardstock to increase contact with the springy posts and cleaned the posts. The device now no longer soft resets, loses signal, or corrupts the display on opening. It seems that the jolt of opening the device can exceed the rate of compliance of the springy posts when extended and that this can lead to unpredictable behavior.
Since your device fails when closed instead of open I suggest the following:
1) Clean the battery terminals and the spring posts
2) Pad the compartment on the side opposing the springy posts to increase the force on the posts
3) Clean the underside of the display panel and the remainder of the sliding area
4) Clean the SIM contacts
5) Check and double check the action of the SIM panel (as well as verify power-loss on opening)
6) Retard the sliding action to the best of your ability
7) Power-on the device in the opposite user interface orientation (while open/while closed)
8) Reproduce the issue under unusual gross orientation (use the device upside-down, screen face down)
9) Use the device in a low humidity environment after desiccation
Wish you the best!
Bad electrical contact either on the SIM connector itself (remove SIM, clean and reinsert), or maybe more likely the connections inside the phone between the screen assembly and main body, the connector might have moved a bit.
same problem
I too have this problem recently. I have tried hard resetting the phone, getting a new sim. I will try all of these including flashing a new rom and report back. If anyone has any other ideas PLEASE help.
my symptoms for the doctors of the Kaiser World:
When my phone is slid open and I reset or turn it on phone works as normal and can make calls, receive messages, ect. When I make a call "open" then close the phone or close the phone then make a call it stays on full service until I press call. I get the error message "operation failed" and then "the SIM card is missing" until I slide it open and reset the phone in wireless manager, where it acts normal again with full service.
EDIT: Flashed ROM no difference, same problems
Took apart my whole phone looking for a culprit and to my surprise have found none. The ribbon cable for the sim card (my best guess) seemed to be in very good condition... I am now OFFICIALLY stumped.
Actually, it really sounds to me that this IS a problem with the ribbon.. My sons tilt stated its problems with the same way (except his would only work while it was open). All it takes is one of the copper wires inside the ribbon to break (even just on the inside). If it only works in one position or the other, it woudl be because the 2 end peices get contact then... the ribbon could ahve gotten caught or pinched or something, and that would do this.... Just my opnion...
Even i started facing the same problem. the phone would loose network connectivity and would take few minutes to catch it back. sometimes it would give me SIM CARD missing error. i had to restart the phone to make the SIM CARD detect, but most of the times it would not detect. on slide opening the screen the SIM CARD would get detected 1 out of 50 times. later i gave the phone for HTC authorized service center over there the technician narrowed down the problem to a damaged flex cable which connects the SIM CARD module to the motherboard. will be getting my TILT back from service tomorrow. . will get back tomorrow with the results...
I have this problem too ... but not just when shut.
It's permanent now.
hey guys.... i had the same problem too... after a couple minutes use the sim would " not be detected.." all i did was took a little sticky note and folded it a couple time to make it the size of the sim card.. then i ripped half of it off... then i opened the sim hatch and slid the paper in between the sim and the little silver bracket that holds the sim in...
it seemed to have put more pressure don on the sim so the contacts touch better i suppose... i did this a month ago and have not had a single little problem since.. might be an easy fix for some of you.. .. hope i heled : )
Update
mukhunthan did you have an update? I am wondering if I should buy a SIM card socket (found it for 50 bucks) or a broken parts tilt off ebay so I also have backup parts but could run into the same problem... Also, if it is not the SIM socket then I would be out 50 bucks. Does anyone have any opinions?
jetblck116 said:
hey guys.... i had the same problem too... after a couple minutes use the sim would " not be detected.." all i did was took a little sticky note and folded it a couple time to make it the size of the sim card.. then i ripped half of it off... then i opened the sim hatch and slid the paper in between the sim and the little silver bracket that holds the sim in...
it seemed to have put more pressure don on the sim so the contacts touch better i suppose... i did this a month ago and have not had a single little problem since.. might be an easy fix for some of you.. .. hope i heled : )
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same fix worked for me
update:
bought a brand new SIM card socket and replaced. Turned on the phone, and while it seemed promising, the same thing happened. I have officially given up and want to through the phone across the room (lol) Have tried everything now from the paper to cleaning contacts, a new socket, new SIM, checking connections, ect. I guess I will be calling this one problem a failure. Now I have just purchased a used one off Ebay so I can have the busted one for spare parts (LCD, speaker, styli', batteries, housing, ect).
Thank you all for your input
hi....here is the update.. Got my phone back from the service center with a replaced SIM CARD Flex. It is working now perfectly.
I have the same exact problem like everyone else. The sim just shuts down when I slide it shut.
I was able to get a cheap replacement Tilt via CL, but my new replacement has horrible reception compared to my old one.
I checked around on the site, and now it looks like I will have to flash my radio to get a better reception.
If anyone has any tips for a first timer, please PM me.
Thanks!
Gooker1 said:
I have the same exact problem like everyone else. The sim just shuts down when I slide it shut.
I was able to get a cheap replacement Tilt via CL, but my new replacement has horrible reception compared to my old one.
I checked around on the site, and now it looks like I will have to flash my radio to get a better reception.
If anyone has any tips for a first timer, please PM me.
Thanks!
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Click to collapse
Try upgrading the radio . U may use 1.70.09.01 radio. As far my experience it provides decent signal and also better battery life.
Try upgrading the radio . U may use 1.70.09.01 radio. As far my experience it provides decent signal and also better battery life. After upgrading the flex my phone started acting weird, call would get connected and on audio on ear piece. later upgrading the radio solved the issue.....
Same here
I have the same issue with my tilt.
I have disassembled it and found out that the main flex cable is damaged.
I have bought one at ebay and currently waiting for delivery.
People, as the sim card socket and it's flex are not moving parts, there's no chance it being damaged. The problem is in the main flex cable that connects the mobo and LCD unit.
My damaged flex shows about 5 lines that are damaged, they are cut off.
PS with this problem the microSD slot is also unavailable.
The phone lits up upon inserting the SD but it wont show up in storage.
I wish U luck.
But be sure that I'm right
I'm having the same problem as well... I'm going to try the sticky note procedure and really hope it works. I can't afford to spend $50 on a used phone :'(
has anyone come up with something new? ive just had the same problem, and here in mexico i dont think there are any htc centers...so im pretty much depending on u guys! pleeeeeeeeease lol
have any of you tried a new sim in it as i have found that the sim warp slightly with heat from the phone. I had this problem a while back and simply slightly bent the sim flat again and pushed the two metal runners down slightly to make better contact. Worked for me

at&t tilt: stops detecting sim card when slide IN. works when slide out

i have had no problems before, i flashed a couple roms in it before, but in the end, i kept very lightly modded rom very close to OEM rom for the tilt that i got from here. all was well for months and months.. until now.
i noticed that the phone will lose signal. and not detect a sim card anymore. at first i thought it was sim. so i tried it on my other tilt (i have 2) and i determined that its the phone.
if i restart it, it works for about 1 min or less if im lucky.. then i have to to go comm. manager, turn off phone signal, and turn it back on, usually, that does the trick. but now, that wont even work anymore.
the only way to get the sim recognized again is if i slide the phone out, go to comm. manager, turn off phone and turn back on, and LEAVE the phone slided out. once i slide the phone back in, it will not detect the sim. ive tried diff. spl, different roms, and searched before i came back here.
ive had it for over a year, have broken the screen and messed up keyboard by closing hood of my car on it,
but ive fixed it. and that was long ago. maybe this new problem is because of this. if someone had similar problems, let me know what you did. or if anyone can point me into the next direction. i guess ill have to crack it open again.
I had a similiar issue where my phone would turn on ok, then lose signal and then get the no sim card error (dialer screen). What I ended up doing was taking a piece of tape and put it on the back of the sim card then slid it into the holder and locked it. (It was a thick metal tape, if you use scotch tape I recommend using a few pieces). Once I did that I havent had another problem with it. Its a pain to get the sim out of the phone because it ruins the tape but I would rather deal with that than not have my phone work correctly.
Let me know if that works for ya.
Jim
i see. so it seems that your problem was that the sim shifted out of place sometimes... i will try that. hope it works. its so odd that my sim card dissapears when i close my tilt
I just recently had a similar problem and I finally figured out it was a bad contact with the SIM card. you can either use the tape trick, or if you have a steady hand, take a thin object (such as a paper clip or glasses screwdriver) and very gently lift the contacts up underneath of where the sim card goes. they may have been pushed down due to abnormal pressure exerted on the back of your phone, I think that's what happened to mine.
thanks for your help. the sim contact issue was the first thing i suspected, AND tried. i used a needle. i raised the level of each of the 8 contacts making sure the sim will make contact with each pin. but the problem remains.
i will try this again. to double check. i will respond with the results
i tried pushing the pins up a little bit again, i still have the same problem
*but now i have an update, it seems that the sim card stops being detected right before i actually fully slide the phone back in. for examplle, before the slide-in tone is played, and before the screen tilts back.
i already took it apart for a look inside, everything seems fine. and i dnt really know wht to look for.
Hi,
was reading about ur issue, just tought on jumping into the wagon, I suspect it might be the flex cable that connects the sim to the motherboard, if there is such cable, i haven't opened my kaiser yet but my Pioneer car radio has this flex cable issue when the drive is closed the screen turns on and the whole radio but as soon as you press eject (the face will scroll and unveil the cd slot) the radio actually turns off and i have to move the face back to its original position in order to work. At the end I took the flex cable out and 1/4 of it was teared, in the end I had to order a new part
thanks so much for your help. i guess there is nothing left to do but to take it all apart. somewhat blindly. at least i know what to look for. bad cables, contacts... im clueless as to whether it can be a bad grounding issue? or a short. i dnt know. i guess i may be the first one to experience a problem like this on a tilt.
so i will do my best to get this problem resolved. and maybe include some pictures if it is intereting enough
my tilt totally stopped recognizing the sim.. it first happened when i dropped it and had to keep it open to keep contact.. then i was sitting with it open and tilted up, it fell and closed somehow and now the sim isnt there at all... i guess something is disconnected or whatever, im afraid to take it apart, but its either that or a paper weight.
New Sim
I had a similar problem. My sim card would disappear on occasion then one day I woke up and no phone. Just an annoying sim card not installed message. Checked the phone by putting in a known working sim card and it was fine. Called ATT for a new sim card and now my phone is working. Try a new SIM CARD.
For the original poster -- that fact that it works when the keyboard is in one position but not the other indicates that it is likely a bad flex cable.
Agreed
Its most likely the cable. I used a new SIM, the extra pressure trick, cleaned contact, etc on mine yesterday, but the problem remained.
I got a used Tilt from Craigsliist , reusing the SIM and case, and it works great.
i wonder if anyone has bought this item before and if it works? upon research, i think our problem comes from the sim card flex and ribbon:
http://cgi.ebay.com/HTC-TyTN-II-P45...AU_MobilePhoneAccessories?hash=item2a05bd88c4
It definitely comes form that ...but the repair cost is more than the replacement cost..so why bother with repairing it?
Hey, I'm having the same problem, my phone just out of the blue after a year of use says no sim card. My card is fine in other phones, and no cards work in my phone. I tried the pressure thing and cleaning the pins, but no good. My next option will be a hard reset/ wipe the phone and see if that clears the problem. I'm not optimistic after reading the thread. Did any one have luck with one of those Kaiser Flex Sim Card Slot Repair Parts that loller90278 mentioned? If so, I would rather spend $16 to fix a phone that has worked well up till now, rather than spend $100 on an unknown used phone. Still I don't want to bother if it's not going to work.
Thanks
well well...i'm going to have to join this "club" of affected kaiser users
my kaiser just started misbehaving last night. i bought it brand new exactly 1 year and 11 months ago
i took good care of it, barely ever tilted the screen during my almost 2 years of use. the current behavior is that when the keyboard is closed, the sim is hardly ever detected (1 out of 10 times perhaps). when the keyboard is opened, the sim is fairly regularly detected (9 out of 10 times perhaps).
i am not going to bother with investigating the possibility of a software problem because of my observations. given all the threads i've read about this issue, i am convinced my sim flex cable is either loose and/or broken.
anyway, it seems the kaiser's flex cable is just not built to last much longer than 2 years. if i can have it repaired for up to around $50, i'll go for it...if not, HD2 here i come!
ASCIIker said:
well well...i'm going to have to join this "club" of affected kaiser users
my kaiser just started misbehaving last night. i bought it brand new exactly 1 year and 11 months ago
i took good care of it, barely ever tilted the screen during my almost 2 years of use. the current behavior is that when the keyboard is closed, the sim is hardly ever detected (1 out of 10 times perhaps). when the keyboard is opened, the sim is fairly regularly detected (9 out of 10 times perhaps).
i am not going to bother with investigating the possibility of a software problem because of my observations. given all the threads i've read about this issue, i am convinced my sim flex cable is either loose and/or broken.
anyway, it seems the kaiser's flex cable is just not built to last much longer than 2 years. if i can have it repaired for up to around $50, i'll go for it...if not, HD2 here i come!
Click to expand...
Click to collapse
just wanted to follow up on my own post above.
i just got my kaiser back. its been repaired
the dude cannibalized the main flex cable and sim assembly from a tilt and transplanted it into my tytn2. BUT! there has been an interesting side effect...because the tilt does not have a front cam, my guess is that its flex cable is unable to carry the signal of the front cam in the tytn2. so now my front cam is no longer detected. the camera app shows no icon to switch to another camera. the icon is blank!
i figured i could either have a kaiser with sim problems or a working kaiser with no front cam. i chose to keep the flex cable from the tilt because there is no 3G in my region and i hardly ever used the front camera otherwise.
long story short, my kaiser is back in business!
Similar problem !!!
Hello mate, .,. the problem in you case is the connecting ribbon between the keyboard that holds the sim card beneath it and the screen. I recommend u to replace the ribbon that connects. Its around 40 USD and that should do the trick.
Cheers !!!!!

[Q] the wifi HARDWARE problem fix?

Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Judging by your description, it might be that the WiFi/BT chip isn't attached well - some of the balls in the BGA (Ball Grid Array, look it up) have cracks that prevent proper contact.
If this is indeed the case, it can be fixed by reflowing or just directed heating of the chip area to the melting temperature of the soldering alloy.
However, this might not be the problem - and if it isn't, there might be a host of reasons for it.
You need to correlate the location of the WiFi/BT chip and the pressure you're applying.
Jack_R1 said:
Judging by your description, it might be that the WiFi/BT chip isn't attached well - some of the balls in the BGA (Ball Grid Array, look it up) have cracks that prevent proper contact.
If this is indeed the case, it can be fixed by reflowing or just directed heating of the chip area to the melting temperature of the soldering alloy.
However, this might not be the problem - and if it isn't, there might be a host of reasons for it.
You need to correlate the location of the WiFi/BT chip and the pressure you're applying.
Click to expand...
Click to collapse
wow thank you, i looke it up it should be simple
could you tell me what is the bridging he talked about ?
He might be suspecting something else.
synos_x said:
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Click to expand...
Click to collapse
I have fixed my WiFi but bluetooth is still dead.
The WiFi problem is actually a poor connection between two boards inside the phone. There's two boards that need to make contact but because they aren't hard-wired together they rely on a touch contact. There's a shiny foil square on top board (main pcb) that has to contact conductive square on lower board. The shiny foil square looks like it gets compressed over time which is why the wifi only fails on some phones after a while. Some phones will be fine but I think it's just poor engineering to rely on a soft touch contact!!
When you push in the back against the mic you are pushing the boards together to make contact.
I fixed by placing some of the screen adhesive (which I had plenty of after removing screen) underneath the spacer pad that is under the bottom board. This forces the boards together and keeps the WiFi going.
However, I thought this would fix bluetooth but no such luck. Perhaps there's another connection that's not right somewhere?
so i sent it to a repair center sony told me the board is fried, i dont know what this means , everything works except for wifi bluetooth, they are both working until now, i think they heated the wifi part on the board
Silverdace said:
I have fixed my WiFi but bluetooth is still dead.
The WiFi problem is actually a poor connection between two boards inside the phone. There's two boards that need to make contact but because they aren't hard-wired together they rely on a touch contact. There's a shiny foil square on top board (main pcb) that has to contact conductive square on lower board. The shiny foil square looks like it gets compressed over time which is why the wifi only fails on some phones after a while. Some phones will be fine but I think it's just poor engineering to rely on a soft touch contact!!
When you push in the back against the mic you are pushing the boards together to make contact.
I fixed by placing some of the screen adhesive (which I had plenty of after removing screen) underneath the spacer pad that is under the bottom board. This forces the boards together and keeps the WiFi going.
However, I thought this would fix bluetooth but no such luck. Perhaps there's another connection that's not right somewhere?
Click to expand...
Click to collapse
Hi,
Can you please let me know that how did you open that phone? did you opened it by your self?
Is it possible to open from back side only?
Do you have pictures for wifi solution which you described above?
nikunjnandaniya said:
Hi,
Can you please let me know that how did you open that phone? did you opened it by your self?
Is it possible to open from back side only?
Do you have pictures for wifi solution which you described above?
Click to expand...
Click to collapse
Hi sorry but don't have phone any more. Don't think I have pictures any more either.
You cannot open from back side only. You have to take off screen. Look on youtube to see how it's done.
Silverdace said:
Hi sorry but don't have phone any more. Don't think I have pictures any more either.
You cannot open from back side only. You have to take off screen. Look on youtube to see how it's done.
Click to expand...
Click to collapse
Hi,
Thanks for your reply. Currently i had press with pressure back side and it's working for me.
But let say if i open phone as shown in youtube then do i need anything extra to assemble my phone again?
Thanks that you have write your wifi issue here and it will help others.
nikunjnandaniya said:
Hi,
Thanks for your reply. Currently i had press with pressure back side and it's working for me.
But let say if i open phone as shown in youtube then do i need anything extra to assemble my phone again?
Thanks that you have write your wifi issue here and it will help others.
Click to expand...
Click to collapse
Yes, you'll need the screen adhesive stuff. Can find on eBay or Aliexpress or Witrigs etc.
synos_x said:
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Click to expand...
Click to collapse
old thread but just in case some zr user are still searching for an answer
there is a chip on main pcb which controls wifi and bluetooth, but sony didn't soldered it correctly and thus it needs pressure to make connections with pcb.
Only permanent solution is to apply heat on that chip ( after disassembling pcb from phone ) and then it will work for forever.
My phone's ( zr ) wifi bluetooth and nfc wasn't working, so i dissembled it and took the pcb to a laptop repair shop and told them to apply heat on that chip to solder it correctly ( as i don't have that instrument which is used to apply heat on small point ), and after that it is working without any issue. :highfive:
Note:- be carefull while removing screen as it is very fragile and will brake easily if not handled correctly ( yes i broke my screen and using an after market now which costed me Rs1800 ( for full folder ), i was lucky to still find its screen .
Saw Sooper diff DDI dijauhkan I'd do so

mobile network missing randomly

Happened twice now.
Mobile network just stops, leaving me with the icon shown in the screen shots
Last time it happened I just powered off and back again..
On 371
L29
Anyone else had this happen?? Never happened before.
Could just be the age of the phone or the SIM card developing a fault but have never had a phone of mine go like this before.
Roll on oneplus 8 release, can't wait to get rid of the phone.
Use your sim on the second slot to see if the problem is fixed.
I had problem when i was talking on the phone the call would randomly drop out. this problem was more than a month and my sim was 1 year old. i cleaned the sim but nothing changed, when i used the second slot is working fine.
Grazeholder said:
Use your sim on the second slot to see if the problem is fixed.
I had problem when i was talking on the phone the call would randomly drop out. this problem was more than a month and my sim was 1 year old. i cleaned the sim but nothing changed, when i used the second slot is working fine.
Click to expand...
Click to collapse
Must be the slot then.
I'm actually using a rebranded L09
So only one SIM slot.
It's been ok since the power off so will keep an eye on it.
Cheers
dladz said:
Happened twice now.
Mobile network just stops, leaving me with the icon shown in the screen shots
Last time it happened I just powered off and back again..
On 371
L29
Anyone else had this happen?? Never happened before.
Could just be the age of the phone or the SIM card developing a fault but have never had a phone of mine go like this before.
Roll on oneplus 8 release, can't wait to get rid of the phone.
Click to expand...
Click to collapse
Nice theme . You mind sharing it or the link, thanks.
sPEADy said:
Nice theme . You mind sharing it or the link, thanks.
Click to expand...
Click to collapse
It's:
Nightlike 9.1
Lawn chair 2
Klopp wallpaper
That's it tbh
L04 in Canada, Bell on 365. Noticed that happen a few times now, same with reboot to fix. Came on randomly about a week apart.
StatikBlue said:
L04 in Canada, Bell on 365. Noticed that happen a few times now, same with reboot to fix. Came on randomly about a week apart.
Click to expand...
Click to collapse
Ye it's been happening more frequently, happens when I go out of range, ie: basement and then come back..
Might just need a factory wipe..
@StatikBlue
And as luck would have it...look what just happened lol.
Going to leave it, to see if it comes on by itself or if there's any other way.
Edit: it didn't, cleaned the SIM tray, blew into the hole (like it was the SNES days) and I'll see how it goes.
That's the symbol for no sim card and/or faulty sim.
Unless the sim is actually faulty, the most common reason is if the sim is dirty, as the contacts can corrode slightly over time (the same as your chip & pin credit card can).
Give it a clean with a bit of cotton wool and alcohol, or failing that simply rub the chip with your thumb!
If it keeps happening, get a replacement from your carrier (usually free) & if it then keeps happening it's probably dirty contacts in the phone....
Had it occasionally with different makes of phone over the years so not just a Huawei problem & you'd be unlucky if it's a faulty phone.
colthekid said:
That's the symbol for no sim card and/or faulty sim.
Unless the sim is actually faulty, the most common reason is if the sim is dirty, as the contacts can corrode slightly over time (the same as your chip & pin credit card can).
Give it a clean with a bit of cotton wool and alcohol, or failing that simply rub the chip with your thumb!
If it keeps happening, get a replacement from your carrier (usually free) & if it then keeps happening it's probably dirty contacts in the phone....
Had it occasionally with different makes of phone over the years so not just a Huawei problem & you'd be unlucky if it's a faulty phone.
Click to expand...
Click to collapse
Yea I'd done that pal. Seems to have been a poor contact, hasn't happened since.
I've never had this issue myself..
StatikBlue said:
L04 in Canada, Bell on 365. Noticed that happen a few times now, same with reboot to fix. Came on randomly about a week apart.
Click to expand...
Click to collapse
Ok so a removal, clean and blue into the hole has fixed it for me. Just an imperfect contact
dladz said:
Ok so a removal, clean and blue into the hole has fixed it for me. Just an imperfect contact
Click to expand...
Click to collapse
K what? What did you remove, clean and blow(blew) into which hole?
StatikBlue said:
K what? What did you remove, clean and blow(blew) into which hole?
Click to expand...
Click to collapse
Lol, just the SIM tray, pulled the sim, wiped over both..blew into the empty SIM hole.
Kind of like having a super Nintendo when you had to blow in it to get it to work
Ah now I gets you.

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