Related
First of all, let me start of what I've tried doing, in order.
New SIM-card, factory reset, unlock + root, custom ICS (VirtousQuattro).
None of the above solved my problem, it still persists! The problem is, the phone disconnects completely from the network (no bars) and I can't manually search for a new provider due "active package transmission" or something like that, it stays disconnected for 1-3 minutes and then reconnects. It happens fairly often, like once for every 5 times I try using the phone. I haven't noticed the problem when being connected to a WiFi, so I'd assume the problem is related to an issue between the phone and the network.
Has anybody else had this problem? Any idea how to solve it?
Have you tried flashing a new Radio? I can't see how that would differ from flashing a custom ROM, but might be worth a shot?
CyanideJack said:
Have you tried flashing a new Radio? I can't see how that would differ from flashing a custom ROM, but might be worth a shot?
Click to expand...
Click to collapse
I haven't tried that, I might in a couple of days if nobody has any other solution though.. I've had the problem for a couple of weeks so I'm kind of used to it!
Naforcee said:
I haven't tried that, I might in a couple of days if nobody has any other solution though.. I've had the problem for a couple of weeks so I'm kind of used to it!
Click to expand...
Click to collapse
You need s-off to flash a new radio m8.
Sent from my Incredible S using XDA App
Adde79 said:
You need s-off to flash a new radio m8.
Sent from my Incredible S using XDA App
Click to expand...
Click to collapse
So much for being "unlocked". Also, hey mate
Yes Naforcee, I have exactly the same problem. And it never happens while using wifi as you said.
It started immediately after I updated to Sense 3 / Android 2.3.5 from HTC.
What was the version of Android in your previous Rom? I had issues when I was on Froyo and went to Gingerbread without flashing a new radio.
Sent from my HTC Incredible S using XDA App
keiichi_san said:
What was the version of Android in your previous Rom? I had issues when I was on Froyo and went to Gingerbread without flashing a new radio.
Sent from my HTC Incredible S using XDA App
Click to expand...
Click to collapse
I had 2.3.5 earlier, so that'd be GB. Same problems with ICS now though =/
Antenna in the back cover got busted?
Maybe the contacts aren't touching enough?
fallenwout said:
Antenna in the back cover got busted?
Maybe the contacts aren't touching enough?
Click to expand...
Click to collapse
Don't think it's a physical problem, I have perfect connection and it just dies out for about 2 min until it reconnects, and I can't search for network when it's down due to active packet transfer..
Could try a new SIM card. Might not fix it, but worth a shot - I've seen this posted as a fix for other people.
I used to have this problem on certain radios on the Desire Z, after flashing around a bunch of radios to try all of them. Stuck with one and it went away, so it was software for me.
kaijura said:
Could try a new SIM card. Might not fix it, but worth a shot - I've seen this posted as a fix for other people.
I used to have this problem on certain radios on the Desire Z, after flashing around a bunch of radios to try all of them. Stuck with one and it went away, so it was software for me.
Click to expand...
Click to collapse
New SIM was my first try to fix it, it didn't work.. I guess radio is the only solution left!
Naforcee said:
New SIM was my first try to fix it, it didn't work.. I guess radio is the only solution left!
Click to expand...
Click to collapse
What version radio do you have installed?
Naforcee said:
First of all, let me start of what I've tried doing, in order.
New SIM-card, factory reset, unlock + root, custom ICS (VirtousQuattro).
None of the above solved my problem, it still persists! The problem is, the phone disconnects completely from the network (no bars) and I can't manually search for a new provider due "active package transmission" or something like that, it stays disconnected for 1-3 minutes and then reconnects. It happens fairly often, like once for every 5 times I try using the phone. I haven't noticed the problem when being connected to a WiFi, so I'd assume the problem is related to an issue between the phone and the network.
Has anybody else had this problem? Any idea how to solve it?
Click to expand...
Click to collapse
I was sick and tired of these problems, and then i made s-off, rooted and isntalled custom ROM and changed Radio 20.4802.30.0822U_3822.10.08.28_M and now everything is good
He has: 3822.10.08.28_M
Sent from my Incredible S using XDA App
Nonverbose said:
What version radio do you have installed?
Click to expand...
Click to collapse
He has: 3822.10.08.28_M
Sent from my Incredible S using XDA App
Naforcee said:
First of all, let me start of what I've tried doing, in order.
New SIM-card, factory reset, unlock + root, custom ICS (VirtousQuattro).
None of the above solved my problem, it still persists! The problem is, the phone disconnects completely from the network (no bars) and I can't manually search for a new provider due "active package transmission" or something like that, it stays disconnected for 1-3 minutes and then reconnects. It happens fairly often, like once for every 5 times I try using the phone. I haven't noticed the problem when being connected to a WiFi, so I'd assume the problem is related to an issue between the phone and the network.
Has anybody else had this problem? Any idea how to solve it?
Click to expand...
Click to collapse
Try flashing this radio http://forum.xda-developers.com/showthread.php?t=1471861 using the ADB method. If that doesn't help I recommend doing a full wipe and reinstalling the ROM. There are a lot of different custom ROMs for IncS which can be found at http://forum.xda-developers.com/showthread.php?t=1136463
I personally like Niks ROM and Android Revolution HD.
Looks like rom installation issue.
My son's Inc-S having a similar problem to the OP, but more severe. A couple of weeks ago he entered airplane mode with all behaving normally, but since exiting airplane mode at the end of the flight he hasn't been able to register on the network (voice or data). We've tried:
fiddling with all the network settings
change sims (all sims work on my Inc2, none work on his IncS)
cleaning the antenna connections
reboot
factory reset
flashing new ROM (Android Revolution HD 2.3.0)
flashing new radio (3805.10.03.29_M)
So far, no satisfaction. We're still seeing no bars of reception (with an X) in the notification area, and don't have the option to manually or automatically register with any network operator (although several occasionally show up as options under "Search Networks"). We usually get the error message, "Unable to search for network while packet connection is active" when trying to select a network. Funny thing is, mobile network data has been shut off on his phone for the past month so the packet connection is definitely not active (wifi is on). Based on a network signal analyzer app, the phone is receiving the same mobile network signal as mine (-65 to -70 db) when they are side-by-side, so the problem does not appear to be in the antenna. The phone works just fine using wifi but is useless as a phone.
Any ideas about what to try next?
scrinch said:
My son's Inc-S having a similar problem to the OP, but more severe. A couple of weeks ago he entered airplane mode with all behaving normally, but since exiting airplane mode at the end of the flight he hasn't been able to register on the network (voice or data). We've tried:
fiddling with all the network settings
change sims (all sims work on my Inc2, none work on his IncS)
cleaning the antenna connections
reboot
factory reset
flashing new ROM (Android Revolution HD 2.3.0)
flashing new radio (3805.10.03.29_M)
So far, no satisfaction. We're still seeing no bars of reception (with an X) in the notification area, and don't have the option to manually or automatically register with any network operator (although several occasionally show up as options under "Search Networks"). We usually get the error message, "Unable to search for network while packet connection is active" when trying to select a network. Funny thing is, mobile network data has been shut off on his phone for the past month so the packet connection is definitely not active (wifi is on). Based on a network signal analyzer app, the phone is receiving the same mobile network signal as mine (-65 to -70 db) when they are side-by-side, so the problem does not appear to be in the antenna. The phone works just fine using wifi but is useless as a phone.
Any ideas about what to try next?
Click to expand...
Click to collapse
Probably a RIL-Radio communication issue. Recommended radio is the newer 3822.01.08.14_M radio, so maybe you should try that.
well, my wifi is acting wierd... reception is good and it doesn't disconnect too often, theres just this little anoying thing!
everytime roughly 3-4 days after i flash a new rom my wifi simply refuses to connect to network, and not a specific one, any network at all!
and it stays like this for a couple of hours and then all of a sudden it picks up a a networks and it works fine for a while, untill i happens again...
i've tried restarting and taking out the battery and turning the wifi off for a while, nothing seems to help, he just decides on his own when he is whilling to connect again....
if i flash a brand new rom the problem disapear for a few days but then it comes back... i'm assuming it has to do with some sort of a cache that is filling up with loads of crap and ruining the wifi activity but i tried googling for this and found nothing..
ideas anyone? (btw this happens on all roms: stock, existenz, beanstalker etc...)
its a hardware problem and not so uncommon look here
http://forum.xda-developers.com/showthread.php?t=2531711
if you can take it to a customer support and if you cant sell it and again if you cant, then just get along with no wifi/bluetooth/NFC check all of them you should have problem with them too
dragunov_lq said:
its a hardware problem and not so uncommon look here
http://forum.xda-developers.com/showthread.php?t=2531711
if you can take it to a customer support and if you cant sell it and again if you cant, then just get along with no wifi/bluetooth/NFC check all of them you should have problem with them too
Click to expand...
Click to collapse
absolutly not related, my NFC and bluetooth works just fine, i don't need to press hard anywhere...
and my wifi works just fine after a fresh rom install... so it's defenetly a software problem...
shteren said:
absolutly not related, my NFC and bluetooth works just fine, i don't need to press hard anywhere...
and my wifi works just fine after a fresh rom install... so it's defenetly a software problem...
Click to expand...
Click to collapse
to me that sounds like the start of it because mine was the same at the first few days flashing a new rom or something would help alot but then i just found out the only thing that was helping it to get fixed was the heat from the device not the rom, but it doesnt hurt to play around with it a little so go ahead and try some other roms or repairs.
you see good reception for wifi
you try to connect
at the authorizing or connecting you will see only one point of signal and connection would kinda like disappear.
this is how it was for me but at the first days it was random it was connected good and ready, when i would left the phone in stand by after a few minutes it would DC, so i thought its kind of a sleep mode malfunction or something but after a few days almost 1-2 weeks it turned out to be hardware problem like ohers so if you see any symptom like that start looking for service centers.
but i hope it would be a software problem for you, so good luck.
Well, once he connects he stays on for days, no problem there... Just sometikes he refuses to connect... Pressing the nfc button doesnt help...
Sent from my C6903 using Tapatalk
shteren said:
Well, once he connects he stays on for days, no problem there... Just sometikes he refuses to connect... Pressing the nfc button doesnt help...
Click to expand...
Click to collapse
What Wi-Fi channel is your network on and have you tried 5GHz?
Didn't look into those things, but it happens with all networks except ones without passwords
Sent from my C6903 using Tapatalk
Have you tried deleting wpa_supplicant.conf in data/misc/wifi and reconnecting to the network? (this will delete all saved passwords and settings for known wi-fi networks) also try to disable Auto IP in advanced wi-fi settings
Well the phone is qith my sister now, I got a new z1 so far wifi worka for her, it stoppes for a few hours yestarday but came back, I might try to flash. 310 and see if it works better with it. And the Wapa_sup sounds like a good idea. Btw z1 is also jittering some with wifi, it's a global Sony problem...
Sent from my C6903 using Tapatalk
temp solution?
Well, it is probably a hardware problem. I have had the same problem, everything looks fine, but you can't connect to any network.
So, searched, reinstalled, etcétera, nothing worked. Untill I read a crazy solution link://talk.sonymobile.com/t5/Xperia-Z-ZL-ZR/xperia-zr-wifi-association-rejected/td-p/516275/page/4
and found out that if you put pressure on the back of your pone right at the NFC chip, with a finger or so, the Wifi will come alive again.
Personally I had to hit my pone's back at that exact spot with my finger (for not damaging it with excesive force) a few times, but then suddenly it worked.
So, I am convinced it's a hardware problem. Hope it works for other people too.
I bought a LT30a over the Internet a year ago. I used it primarily as an app device and GPS, so didn't use a SIM much. But lately I have a need for a phone that works both in the US and UK, and this is it.
So my problem is that once my phone goes into sleep mode, when I turn it back on, it no longer connects to a phone signal. This is not the same as the Wifi, which I have no problem with. This is phone, 2g, 3g, 4g. I have to completely power cycle the phone to get a signal again, and even then it only lasts for as long as the phone is awake. I've tried a factory reset, but still no luck.
I know this might be hardware issue, but since I have no recourse in that event, I was thinking of trying a custom ROM and/or Kernal. Do you think these would likely fix the problem? For that matter o you think they would even have a chance? Od does someone know of another fix?
cloudboy said:
I bought a LT30a over the Internet a year ago. I used it primarily as an app device and GPS, so didn't use a SIM much. But lately I have a need for a phone that works both in the US and UK, and this is it.
So my problem is that once my phone goes into sleep mode, when I turn it back on, it no longer connects to a phone signal. This is not the same as the Wifi, which I have no problem with. This is phone, 2g, 3g, 4g. I have to completely power cycle the phone to get a signal again, and even then it only lasts for as long as the phone is awake. I've tried a factory reset, but still no luck.
I know this might be hardware issue, but since I have no recourse in that event, I was thinking of trying a custom ROM and/or Kernal. Do you think these would likely fix the problem? For that matter o you think they would even have a chance? Od does someone know of another fix?
Click to expand...
Click to collapse
do format factory if still have problem
flash latest 4.3 rom on your phone with Flash tools
(may be you have hardware problem)
Hi,
I have Xperia ZR C5503 phone about a year. Until 2 months ago I was using Android 4.3. When Lollipop update distributed I upgraded it to 5.0.2.(official)
But sometime after the upgrade my phone started not connecting wifi. It sees the available networks but not connecting them. The signal drops to lowest level about a second while trying to connect and it fails. Also I was using my phone's wifi tethering feature to share my internet to my pc. However wifi tethering is also not working. I enable it but I think it can't work as router. And lastly, I tried to send a file to my phone via bluetooth and it also enables but no other device sees it. I also have low sound on the phone and I can't hear people I am talking to.
So I got frustrated this saturday and downgraded to official 4.4.4. But it was same. Later I unlocked the bootloader and rooted my phone, installed recovery software. With that recovery mode I cleared all caches but the problem still countinued. Lastly I installed an unofficial modified kitkat to my phone but those problems still appears. I don't know why this phone is so problematic for me. I don't know if it is software related or hardware related. Now that my warranty is no longer valid.
Could you give me some ideas to attempt to solve these issues?
llama50 said:
Hi,
I have Xperia ZR C5503 phone about a year. Until 2 months ago I was using Android 4.3. When Lollipop update distributed I upgraded it to 5.0.2.(official)
But sometime after the upgrade my phone started not connecting wifi. It sees the available networks but not connecting them. The signal drops to lowest level about a second while trying to connect and it fails. Also I was using my phone's wifi tethering feature to share my internet to my pc. However wifi tethering is also not working. I enable it but I think it can't work as router. And lastly, I tried to send a file to my phone via bluetooth and it also enables but no other device sees it. I also have low sound on the phone and I can't hear people I am talking to.
So I got frustrated this saturday and downgraded to official 4.4.4. But it was same. Later I unlocked the bootloader and rooted my phone, installed recovery software. With that recovery mode I cleared all caches but the problem still countinued. Lastly I installed an unofficial modified kitkat to my phone but those problems still appears. I don't know why this phone is so problematic for me. I don't know if it is software related or hardware related. Now that my warranty is no longer valid.
Could you give me some ideas to attempt to solve these issues?
Click to expand...
Click to collapse
i think you must have dropped the phone because wifi and blutooth hardware in sony xperia zr is delicate , i too have dropped phone 4-5 time but still i dont have any problem with my cell , approach sony service centre because i heard may problem of XZR problem of bluetooth & Wifi after mobile accidents
rkumbhar said:
i think you must have dropped the phone because wifi and blutooth hardware in sony xperia zr is delicate , i too have dropped phone 4-5 time but still i dont have any problem with my cell , approach sony service centre because i heard may problem of XZR problem of bluetooth & Wifi after mobile accidents
Click to expand...
Click to collapse
Hi,
I had dropped my phone maybe 1 or 2 times but not from high heights.(~ a meter) But that was more than 5 months ago. I am having this issue since last 2 months and I am sure that I didn't drop or harm my phone in any way. However I wash my phone, do you think that could cause that? Just effecting wifi and bluetooth components?
It's not true about dropping the phone make that errors appear, there are many people with same issues, this phone have manufacturing problems, it's not software
My brother have same problem and he never dropped the phone. Just take a look in Sony forums.
Btw, my brother's phone lost Bluetooth connection, NFC, WiFi, Sometimes WiFi works making some pressing in the NFC spot some seconds, but sucks anyway :/
rickymanx said:
It's not true about dropping the phone make that errors appear, there are many people with same issues, this phone have manufacturing problems, it's not software
My brother have same problem and he never dropped the phone. Just take a look in Sony forums.
Btw, my brother's phone lost Bluetooth connection, NFC, WiFi, Sometimes WiFi works making some pressing in the NFC spot some seconds, but sucks anyway :/
Click to expand...
Click to collapse
How can i make the wifi stable? it drops in and out sometimes.
Wifi problem
my sony xperia zr has the same wifi problem it says scanning trys to connect the signal drops and again starts scanning..
I stopped the wifi service and restarted my phone and the wifi worked for a day and again the same proble.
Do anyone has a solution for this??
I have been facing the issue of wifi not connecting, since my upgrade to 5.1.1.
My research has led me to believe that the issue may be software based. However I'm not an expert in the field. And i was thinking of downgrading back to an older version of lollipop when the wifi was not dropping.
Can anyone advise on whether this may be a smart move, or a completely useless one?
Also is there a diagnostic protocol I can go through that could help me figure out for sure whether my wifi is busted physically, as some of you suggest here.
Thanks
Josette
I've tried the method "settings global put tether_dun_required 0" but when i reboot my Z5, the value comes back to 1 ... (and of course wifi tethering is not working, going thru USB is ok)
I'm discussing various points here. Check out everyone of this point and get a fair idea from where problem is originating.
1) Go to WiFi Settings > Keep wifi awake during sleep. Here the string value should be "Always"
2) Under stock firmware there are numerous battery optimisation. Some of them kill WiFi so battery can saved. Now disable this features if you want no drops in WiFi.
3) If both of don't work, head over to Xperia ZR General > Search for your specific device FTF. Flash it via flash tool. This should reset all wifi drivers. Don't opt or apply any battery features and use WiFi. If still issue exits then you're in bad luck.
4) Check for other WiFi access points. Check your own router's webpanel and see somewhere broadcasting and multicast signals are ticked. Also check your WiFi is at 100% of it's performance ( 100% transmit power)
5) Hardware issue. Most of the software part is not causing issues so it's safe to say a hardware issue is causing this. Now, long time ago when 5.0 was released for our device I read article regarding ZR. The user had constant WiFi drops. His issue was that his WiFi soldering was poor inside hardware. He soldered it again and his wifi drops were no longer a problem.
People also experience various bluetooth/tethering issue. It's important that people should gain knowledge about firmware flashing techniques so that device would get reset and you yourself could diagnose the problem. 1 in 0.7k unit has software/hardware issue in manufacturing. Sony provides diagnostic app, search in play store ( I'm not sure about this). Hope this answer helps many.
hii.. so did u get any solution for the problem ?
i am facing this problem since one month. i tried rebooting my phone many times. i even tried factory reset. but nothing has worked till know.
if u have any solution please inform me.thanku
Wifi Issue.
Hello Guys,
I have same issue in wifi after 1.5 Year of phone. Can you please help me on that. Does any one knows any other technician are repairing this phone? as SONY says they are not able to repair phone which even they developed. I do n't why such phones developed.
1. I have repaired phone using PCC.
2. tried reset
3. tried without stamina mode
4. tried with wifimanager app
but nothing works....
If you guys any suggestion any hope please let me know.
Thanks.
Hello guys,
For the past year or so I am having intermittent problems with my 3g connection. It just loses the connection with the mobile internet without any error messages and the only way to fix this is rebooting the phone. At first it happened every couple months but the intervals between connection losses seems to get shorter. The last few months it was every 10-14 days, now it's every 5 days. Since a reboot seems to fix this I don't think there is a physical defect on my 3g chip but the shortening intervals are somewhat worrying. I checked my APN settings multiple times and I've called my carrier's tech support several times but they too can't seem to find anything wrong with my APN settings. I'm currently using a custom ROM (OmniROM based on Android 4.4.4 with the Stagefright patch included) but this problem existed even in the original ROM so I doubt it's a kernel/driver issue. Is there anyone knowledgeable enough to pinpoint the problem or at least help me in the right direction because it's becoming a bit annoying and I dislike not being able to figure out WHY something happens. ^^"
The issue you have mentioned applied also to my phone, but it appeared for the first time after installing Omni from golden-guy. I haven't observed it on my stock rom. At the very beginning, I was able to mitigate the issue by turning airplane mode on and off. As you mentioned, the issue's frequency was increasing over time, leading to more than one signal lost per day. Airplane mode solution stopped working. I have also tried to kill (and got restarted) rild, as well as radiod - with no luck. Logs (I haven't checked kmesg) revealed nothing. I'm not sure the details of your issue, but I was loosing the whole GSM/WCDMA signal, not only the Internet access. Meanwhile, the system seemd to be looking for a network, draining my battery.
I still hope that the solution was to replace my SIM card with a new one from the operator. After that, about a month ago, the issue happened only once, and airplane mode on and off solved it. It's worth to notice, that turning airplane mode on took quite long time, about 30 seconds.
I'm having GT-I8190, Omni version 4.4.4-20151108, baseband I8190XXAMG (I'm not sure if it is distributed along with the rom, or maybe resides on different partition, and is not updated with the omni rom releases).
f_ranek said:
The issue you have mentioned applied also to my phone, but it appeared for the first time after installing Omni from golden-guy. I haven't observed it on my stock rom. At the very beginning, I was able to mitigate the issue by turning airplane mode on and off. As you mentioned, the issue's frequency was increasing over time, leading to more than one signal lost per day. Airplane mode solution stopped working. I have also tried to kill (and got restarted) rild, as well as radiod - with no luck. Logs (I haven't checked kmesg) revealed nothing. I'm not sure the details of your issue, but I was loosing the whole GSM/WCDMA signal, not only the Internet access. Meanwhile, the system seemd to be looking for a network, draining my battery.
I still hope that the solution was to replace my SIM card with a new one from the operator. After that, about a month ago, the issue happened only once, and airplane mode on and off solved it. It's worth to notice, that turning airplane mode on took quite long time, about 30 seconds.
I'm having GT-I8190, Omni version 4.4.4-20151108, baseband I8190XXAMG (I'm not sure if it is distributed along with the rom, or maybe resides on different partition, and is not updated with the omni rom releases).
Click to expand...
Click to collapse
Did you check logcat? If you didn't then logcat might show what the problem is. And your problem sounds more severe than mine. I only lose 3g but I can still call and send text messages. A problem with the simcard might be possible but it could also be a physical problem with the simcard slot though I can't say why rebooting or turning airplane mode off and back on would fix that.
Sahri said:
Hello guys,
For the past year or so I am having intermittent problems with my 3g connection. It just loses the connection with the mobile internet without any error messages and the only way to fix this is rebooting the phone. At first it happened every couple months but the intervals between connection losses seems to get shorter. The last few months it was every 10-14 days, now it's every 5 days. Since a reboot seems to fix this I don't think there is a physical defect on my 3g chip but the shortening intervals are somewhat worrying. I checked my APN settings multiple times and I've called my carrier's tech support several times but they too can't seem to find anything wrong with my APN settings. I'm currently using a custom ROM (OmniROM based on Android 4.4.4 with the Stagefright patch included) but this problem existed even in the original ROM so I doubt it's a kernel/driver issue. Is there anyone knowledgeable enough to pinpoint the problem or at least help me in the right direction because it's becoming a bit annoying and I dislike not being able to figure out WHY something happens. ^^"
Click to expand...
Click to collapse
I just wanted to confirm that I have similllar issue with 3g data connection. S3 mini with I8190XXAMG4 baseband. Stock ROM used for last few years (without any significant issues with 3g data connections), upgraded to latest CM11 20151017 from maclaw/novafusion. I noticed that there are some glitches with 3g data connections. Sometimes I need to tap few times before connection finally is being established. Funny thing is that I have second s3 mini with the same CM11 20151017 and all is OK.
I tried a lot of another ROMs; fifferent version of CM11, OmniROM (4.4.4 and 5.1.1), CM12.1 - problem remains - issues with 3g data connection. Is there any solution to get rid of this 3g data issue?
Sahri said:
Did you check logcat?
Click to expand...
Click to collapse
Yes, logcat (main, radio, events) revealed nothing but just signal drop to 0%. At that time, I didn't know about kmsg and system logcat buffer, so I haven't checked them.
Sahri said:
I can't say why rebooting or turning airplane mode off and back on would fix that.
Click to expand...
Click to collapse
Just tried this, and it helped. Usually, when something is not working, people try to turn it off and on again.
I always had rare glitches with mobile data connectivity, and turning mobile data off and on again always solved the problem. I think our problems my be hardware related. I suppose my old SIM card could have buggy software, i.e. advertising to support some newer protocol, but actually didn't. After upgrading, the phone tried to use the new advertised protocol, and got confused, or made the SIM confused.
I also know about cases, when SIM card simply died without any reason.
I used Note 2 about two years, flashed different roms and never had troubles, but then my friend used it about 3 months on 5.0.2 custom and got troubles with gsm/wcdma. My next samsung phone become our beloved i8190. Flashed it from stock to 5.0.2 CM, than 5.1.1, after month got first Cellular bugs. Tried another LP and some KK roms, my troubles with baseband became more and more frequently every day, flashed different modems, changed much settings in system.. So I was desided that it's all HW problems, and hated Samsung for such failure. But one day just tried to install Project Noble, and all this troubles gone forever. So it's just drivers, which not optimised for new Android versions. 4.1.2 mixed with old TouchWiz after fresh and clean Lollypop feels horrible, but we can do nothing with it.
f_ranek said:
Yes, logcat (main, radio, events) revealed nothing but just signal drop to 0%. At that time, I didn't know about kmsg and system logcat buffer, so I haven't checked them.
Just tried this, and it helped. Usually, when something is not working, people try to turn it off and on again.
I always had rare glitches with mobile data connectivity, and turning mobile data off and on again always solved the problem. I think our problems my be hardware related. I suppose my old SIM card could have buggy software, i.e. advertising to support some newer protocol, but actually didn't. After upgrading, the phone tried to use the new advertised protocol, and got confused, or made the SIM confused.
I also know about cases, when SIM card simply died without any reason.
Click to expand...
Click to collapse
But if it's hardware related, wouldn't you think that rebooting our phone or turning airplane mode on and off wouldn't fix it? And did you see in the logcat log if something happened before the signal drop? Sometimes events prior to the signal drop can also tell something about the cause.
Sahri said:
But if it's hardware related, wouldn't you think that rebooting our phone or turning airplane mode on and off wouldn't fix it?
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Hardware could also have its state, which may get corrupted and reset on reboot.
Sahri said:
And did you see in the logcat log if something happened before the signal drop? Sometimes events prior to the signal drop can also tell something about the cause.
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No relevant priori messages within more or less 10 minutes.