I need help reactivating my SIM which mysteriously stopped working - Xiaomi Redmi 4X Questions & Answers

Hi I am in need of some help. I will try to give as much detail as possible.
I was talking on the phone 3 days ago and suddenly my call was cut short. The signal icon at the top was greyed out and it had a little x in the bottom. I tried to figure out what happened and at first I thought the cell tower went down because I was unable to connect to 2g, 3g, LTE/4g, nothing.
Next day with my father visiting my house, I tried his phone, put in my SIM, it works, there is signal (nothing greyed out) and I see the name of the phone service at the top left "Personal". His phone with his SIM works as well. Cell towers are working fine. I put my SIM back in my phone, no signal, not able to make phone calls or receive text messages.
At this time WIFI, Whatsapp, the phone itself works. I double checked APN settings from the carriers website, everything matched. I tried rebooting the phone, reseating the chip, selecting towers automatically, manually, and read many many discussions on the web none of which helped. I decided to do a factory reset. Backed up all photos to the computer and proceeded to reset it to factory new. Put in the SIM and same problem. Oh I also in the meantime have spoken with my service provider and they do not see anything wrong on their end.
So now I proceed to restore the phone from a backup on my MI account, all apps restored. Now I try to use Whatsapp and it wants to confirm my account with a text message, that is a problem because I can't receive text messages. I went to my service provider today, they put in a store SIM with a different number and it worked, they assumed I had a faulty SIM and gave me a new SIM with my number, same problem. Now I think it has something to do with XIaomi or MIUI or my MI account. I log into my MI account from my computer and try to add my email under security and it won't let me because it needs verify my account by sending a text message to my cell which of course is not working.
I am thinking of rooting the phone but I imagine I will somehow be blocked there too.
What happened to my phone?
Is my account being protected in some way MIUI, XIaomi or my MI account preventing me from activating my SIM?
Everything I try to do requires a confirmation text.
I want to root the phone but in order to do so I need to request that Xiaomi unlock the bootloader which will require a text message which of course is to be sent to my phone that wont connect to the cell tower.
Was I hacked or spoofed?
How do I go about fixing my situation?

Have you tried changing region and changing back to your country again? That may be possible reason.
For confirmation of code for bootloader unlocking, while applying put your sim card into other phone and that way you'll be able to get code and bootloader unlocked and can flash and try with different rom.
Similarly if your device is out of warranty then you may want to check with the antenna cable inside phone if that is got disconnected or got loosen. I don't if this would have happened or not but this could be issue. Process with precaution if you do so,I won't be responsible for anything.

Related

No Network to call but 3g works(Solved by fluke)

Got a new problem with my G1, basicaly I used my phone placed it in my pocket went out then when I next checked my phone I had no signal, I didn't take too much notice of it. When I got home and also there I had no signal, did the obvious rebooting, no joy. Then I did a wipe restarted the phone, still no signal now this is the strange part I had 3g because my phone let me sign in also started syncing my phone contact. I can browse on the net also download from the market but when i dial a number I get the message Not registered on network. So when I went to settings/call settings/network operators/available networks clicked on t-mobile it says Your SIM card does not allow a connection to this network. Then just for fun try it with the other network operators same message. Also my sdcard was reformated.
Then I downgraded to rc7 (dreaming.nbh) rebooted no call signal but can browse and use market so I've updated to android 1.5 ota still no joy any ideas I planing to take to a t-mobile store let them check it also has anyone else had this problem before.
wasuup said:
Got a new problem with my G1, basicaly I used my phone placed it in my pocket went out then when I next checked my phone I had no signal, I didn't take too much notice of it. When I got home and also there I had no signal, did the obvious rebooting, no joy. Then I did a wipe restarted the phone, still no signal now this is the strange part I had 3g because my phone let me sign in also started syncing my phone contact. I can browse on the net also download from the market but when i dial a number I get the message Not registered on network. So when I went to settings/call settings/network operators/available networks clicked on t-mobile it says Your SIM card does not allow a connection to this network. Then just for fun try it with the other network operators same message. Also my sdcard was reformated.
Then I downgraded to rc7 (dreaming.nbh) rebooted no call signal but can browse and use market so I've updated to android 1.5 ota still no joy any ideas I planing to take to a t-mobile store let them check it also has anyone else had this problem before.
Click to expand...
Click to collapse
Sounds like a problem with your network, not with your phone. Either that, or your SIM card is fried. Assuming you're on T-Mobile from your post, you need to contact them for a new SIM card (you can do this inside any of their stores.)
lukekirstein said:
Sounds like a problem with your network, not with your phone. Either that, or your SIM card is fried. Assuming you're on T-Mobile from your post, you need to contact them for a new SIM card (you can do this inside any of their stores.)
Click to expand...
Click to collapse
Just to prove my sim is working fine I have put my sim in an old nokia and just rung customer service and got my balance this proves my sim is in working nic.
On the G1 I can't call what so ever or send a text just getting 3g coverage.
Thanks for the advice.
wasuup said:
Just to prove my sim is working fine I have put my sim in an old nokia and just rung customer service and got my balance this proves my sim is in working nic.
On the G1 I can't call what so ever or send a text just getting 3g coverage.
Thanks for the advice.
Click to expand...
Click to collapse
I'd probably try wiping and re-flashing.
h.nocturna said:
I'd probably try wiping and re-flashing.
Click to expand...
Click to collapse
he did lol read the first post
in fact after doing so, he did a super wipe
Then I downgraded to rc7 (dreaming.nbh)
Click to expand...
Click to collapse
It really may be the SIM card or the SIM card reader in your phone (more likely the SIM card) it may work on another phone
try cleaning the contacts (the ones on the phone, not the ones IN the phone) ?
Call customer service and ask them to take you off whatever tower your phone is now on? suposebly pulling the battery will do it to.. Also get Anycut and make a short cut to phone info an toggle radio on off?
same problem occasionally
wasuup said:
Got a new problem with my G1, basicaly I used my phone placed it in my pocket went out then when I next checked my phone I had no signal, I didn't take too much notice of it. When I got home and also there I had no signal, did the obvious rebooting, no joy. Then I did a wipe restarted the phone, still no signal now this is the strange part I had 3g because my phone let me sign in also started syncing my phone contact. I can browse on the net also download from the market but when i dial a number I get the message Not registered on network. So when I went to settings/call settings/network operators/available networks clicked on t-mobile it says Your SIM card does not allow a connection to this network. Then just for fun try it with the other network operators same message. Also my sdcard was reformated.
Then I downgraded to rc7 (dreaming.nbh) rebooted no call signal but can browse and use market so I've updated to android 1.5 ota still no joy any ideas I planing to take to a t-mobile store let them check it also has anyone else had this problem before.
Click to expand...
Click to collapse
i'VE had the same issue, occasionally, I'm fairly certain its the sim card, not the phone. you can take the battery out, pull out the sim card, clean it up (don't use watter or anything that'll scratch it of course) and put it back in, make sure its securely in there, and boot up the phone, however, I've also noticed that sometimes in the middle of the night (like around 2AM to 330AM PST) sometimes cell coverage gives out for t-mobile where I'm at (friends confirmed), if you only just recently recieved 3g in yoru area, they are doing maintenance to get it up and running perfectly, so don't fret too much
EDIT:
Another thing I did was made sure to mess with the APN settings. dont' edit them, just try and change your APN from T-mobile to ATT, wait for it to say "not supported by sim" and then switch back over to T-mobile, that worked for me twice now
I'm having this same problem, only I can't surf the web or use the market. :\ Any help would be GREATLY appreciated.
Sorry to reply so late but the probem is now solved, this is what I did, I took out my sim card out the phone put it in an old phone to see if my sim had any issues but I forgot to take out the sim and put it back in my g1 went sleep.
Next morning put the sim in my g1 and all is fine got connection and all functions working, then waited a few hours no problems at all.
So I rerooted installed the danger spl and custom rom and the probem has just vanished, haven't got the slightest clue why that happened or what caused it.
The sim is new just under a month old lost my old 1 uk t-mobile charged me just under a £10 for a new 1 even if your on contract thiefs
wasuup said:
Sorry to reply so late but the probem is now solved, this is what I did, I took out my sim card out the phone put it in an old phone to see if my sim had any issues but I forgot to take out the sim and put it back in my g1 went sleep.
Next morning put the sim in my g1 and all is fine got connection and all functions working, then waited a few hours no problems at all.
So I rerooted installed the danger spl and custom rom and the probem has just vanished, haven't got the slightest clue why that happened or what caused it.
The sim is new just under a month old lost my old 1 uk t-mobile charged me just under a £10 for a new 1 even if your on contract thiefs
Click to expand...
Click to collapse
its probably
A) the SIM got dislodged or
b) your G1 contacts were dirty.
All the above could cause the phone to not read the information on the SIM
Blowing the dust out/wiping the goldcontacts where the sim goes, and tightly inserting the sim might help, grandmegabosses

Nexus isn't finding network :mad: Help is needed

My Nexus was on 5.0.41, all working sweet, then it stopped "finding" the network. No update, flashing or anything was done prior to the problem.
I tried a SIM from another provider, but still - the "No Service" is written on screen, and when I try to search for networks, it says "Error searching for networks".
I then tried the following ideas (nothing helped):
- Reflashed the Radio image.
- downgraded the Radio image.
- Upgraded it again.
- Flashed the Stock ROM (unrooted and rooted).
- Flashed CM5053.
All was done with wipes as needed.
Any suggestions will be more than welcomed!
Can the device just get bricked like that? with no reason?
It sometimes identifies the SIM's provider (Orange for example) but always with No Service.
It sounds like your SIM card slot isn't holding the card in tight enough to make full contact... try putting a business card, cut down to size, between the SIM and the phone's frame (note, not the contacts side, but the back side) to force the SIM down onto the reader tighter.
If that does nothing, not sure what to tell you?
it didn't help
I'm Italian and I have the same your problem .. I only work in 2G GSM'...ve tried to see if you do so?
I opened another tread here Forum
You need a new SIM.
I just had this problem on Friday. The SIM some how falls of the network and your provider network will not allow it to reconnect.
I can't remember, but if I am right Orange is owned/owns by T-Mobile. Hence they have the same network.
The puzzling part about this is why it happens. This is the second SIM I have gone through with my N1, I also had one go with my G1, my sister bought that G1 and the SIM went out again. My mom bought her G1 same day as me and hers has died once. My friend has a MT3G and his has died two times now. I find this extremely annoying.
I tried every suggestion on the internet for repairing or troubleshooting a SIM. It is a waste of time. Well, everything short of dropping it in isoproply alcohol to clean the contact.
I tried a 2G and a 3G SIM on mine, and had the same result, so my problem is different.
My device just doesn't register with the network, no matter what provider or SIM generation I choose.
Can I ask for a RMA if I unlocked the bootloader?
I do not know you definitely do not pass it under warranty
Ryan then you say you clean the contacts of the nexus or the sim with isopropyl
Mine is now doing that as well and so far everything that I tried isn't fixing it. I get it to connect briefly with edge and then nothing. I am going to try a new sim tonight after work and see if that helps, otherwise unsure of what to do after that...anybody got any answers or suggestions?
I've been suffering from this... have an RMA coming but I got mine to work. Make sure you also have CDMA preferred on there or whatever the default is. If it says unknown you have to reboot the radio somehow. I pulled my battery, waited 5-10 seconds. Then i went and checked airplane mode on and off. Then i checked the service menu again. I can't remember if i had to pull the battery another time but it came back from "unknown" to cdma preferred. You can also try turning the radio on and off via the service menu. Finally select your radio bands for your region by pressing the menu button under phone information again in the service menu and select radio bands. I'm not sure if automatic is a good or bad idea but it couldn't hurt testing it if you still have some issues even after selecting your region specific bands. After this you should be able to maybe search and register or you may need to turn the radio on and off again via airplane or the service menu. I played around with it alot to get it running again.
Also I'm tmobile usa using the one for t-mobile bands. I'm not sure if CDMA preferred is a world wide setting or if its gsm or something else.. but the bands are specific to your region definitely.

help cant connect to network or save proper network or sms settings

a quick history of what I've done so far
Sumsung I897 captivate from ATT unlock and being used on Telus network was working great for about 4 days, then all kinds of problem started cropping up.
Phone came unlocked, I rooted using update.zip from xda, installed rom manager and started removing ATT bloatware, entered SMS and APN info which worked fine.
Yesterday I noticed that where I once got good reception I was now getting nothing and would have to drive down the street before I would get something descent. I thought maybe I'd put it back to stock with rom manager and see if that would help which it did not. It actually made it worse, decided to go all out and use the Odin3 one click downloader just to make sure I was back to stock firmware. This didn't work either but now I can enter the SMS and change the preferred network type but it doesn't save. Preferred network type is grayed out and even though I can change it it never save same as SMS.
Now I can't hold connecting in my living room where my wifes Milestone gets full bars. I tried taking the phone to where I had the best signal and change the preferred network, SMS, and set the network operator but it doesn't save any info, can't find on operator half the time on manual or auto and gave me an error and logged it to #*9900#
I've been at this for 2 days straight and can't figure out how to get it right back to stock, it seems to keep hanging onto the same preferred network and not saving anything I enter.
What can I do to get back to stock, and it has to be something that wipes everything clean, clean, clean, because even the GSM disconnects stay logged under *#*#4636#*#*
***I desperately even tried pulling the batt and SIM card for the night in hopes that would do something.
So, if I'm understand what happened correctly, you bought an unlocked Captivate, rooted it, deleted some bloatware, entered your Telus APN info and everything worked awesome for about four days. Now everything has gone down the hole. Is that right?
If that is the case, then we need to figure out what changed. Using Odin3 would have definitely put you back to stock/unrooted your phone, I don't think you could go back any further than that. If I were you, I would act like I first got the phone. As in, I would do everything you did to it, as if was day one. At one point, everything worked fine. Try to recreate that. You can always look into exchanging it or perhaps Samsung customer support can give you a little more insight to what's going on. Here's the number if you want to try them out.
Samsung customer service - 1.800.726.7864
Thanks, I've gone through the process a few times today from start to finish trying to figure it out ... maybe some of the problems aren't real problems and just limitations that I didn't know where their. I've since flash with odin3+re-partion to the bone stock i897UCJF6 as in not the one click method. It loaded fine but still have the same issue, I can't set preferred network type or get it to keep the number entered into SMSC. I think if I can get passed that I'll be be one the up side of winning. I keep noticing that the log of GSM disconnects never clears or the usage statistics under *#*#4636#*# , I'm thinking its in the same area that other bad data is being held onto instead of being cleared when flash firmware or factory reset.
Is anyone able to change preferred network type? maybe I was never able to change it but I think I should be able too.
I may be wrong in assuming this but I don't think ATT is going to be interested helping me connect one of their handset that I'm trying to use on foreign network, but I could be wrong and is an open option.
*#*#197328640#*#*
debug screen
phone control
network control
band selection
wcdma band
wcdma all
menu->end
used this to lock my phone to WCDMA only so that problem is solved
*** never mind posted to soon it still didn't stick after rebooting
be carefull using the service menu as I have no idea what most of this stuff does
I got the SMS service number issue fix by taking out my sim, swapping in another known working sim from the same network, setting the service number, pressing update and then swapping back. Before every time I tried to update the service number it spit out an "update error" can anybody tell where the SMS config data is stored? on the phone or sim.
The only problem I'm having now is with reception which maybe fixable if I can set the preferred network to WCDMA only. But the button for that option is a light blue colour vs other phones that I can change this setting on. Does the blue mean anything like a locked function or something that set by the firmware as unchangeable?

[Q] Can't set APN, and other SIM problems

Hello,
I have problem with SIM card on my phone. I'm using Temasek's CM 10.1, Kowalski kernel, and V20I-EUR-XX baseband. When phone boots, I normally input my PIN, but it doesn't connect to network, I have to go to Mobile networks and Choose operator automatically, then it connects. I can call and send messages normally, but when the call hangs (me or the other side) it says SIM card error (something like that). Also I can't save APN. In APN settings there is nothing, and when I create APN manually, I input everything and press save, but it doesn't stay, APN's remain empty. I use micro-SIM with adapter, because my operator couldn't get me normal SIM at a time. I'm on Croatian provider VIP. Everything normally worked with micro-SIM from Tele-2 provider (although on CM 10, and CM 7, didn't test it on CM 10.1).
Is it related to my SIM card or SW (ROM or baseband)?
mind_challenge said:
Hello,
I have problem with SIM card on my phone. I'm using Temasek's CM 10.1, Kowalski kernel, and V20I-EUR-XX baseband. When phone boots, I normally input my PIN, but it doesn't connect to network, I have to go to Mobile networks and Choose operator automatically, then it connects. I can call and send messages normally, but when the call hangs (me or the other side) it says SIM card error (something like that). Also I can't save APN. In APN settings there is nothing, and when I create APN manually, I input everything and press save, but it doesn't stay, APN's remain empty. I use micro-SIM with adapter, because my operator couldn't get me normal SIM at a time. I'm on Croatian provider VIP. Everything normally worked with micro-SIM from Tele-2 provider (although on CM 10, and CM 7, didn't test it on CM 10.1).
Is it related to my SIM card or SW (ROM or baseband)?
Click to expand...
Click to collapse
Not sure if you read my post, but I think we are having the same issue regarding the APN, etc.
Not been able to solve mine yet, perhaps together we can put out enough info that someone here can offer a solution? I haven't changed the baseband or kernel on their own, only went from stock 2.3.3, to CM10.1, then to CM7.2.
Are you able to remove the SIM PIN? If you remove the SIM PIN from security, are you able to save APN?
Does your phone access data with the native SIM card the phone was originally locked to?
gglobal19 said:
Not sure if you read my post, but I think we are having the same issue regarding the APN, etc.
Not been able to solve mine yet, perhaps together we can put out enough info that someone here can offer a solution? I haven't changed the baseband or kernel on their own, only went from stock 2.3.3, to CM10.1, then to CM7.2.
Are you able to remove the SIM PIN? If you remove the SIM PIN from security, are you able to save APN?
Does your phone access data with the native SIM card the phone was originally locked to?
Click to expand...
Click to collapse
It seems that PIN is already disabled in Settings-Security-SIM card lock settings :silly:
I called my old operator and they told me my phone was sold locked, and new operator told me they can't help because I didn't buy the phone from them. But then how it works now for calls and messages?
I don't have any other SIM with me so I can't test it with my phone. You say going back to CM7 didn't help? I guess I shouldn't try that then.
Maybe flashing stock ICS would? Any other suggestions?
mind_challenge said:
It seems that PIN is already disabled in Settings-Security-SIM card lock settings :silly:
I called my old operator and they told me my phone was sold locked, and new operator told me they can't help because I didn't buy the phone from them. But then how it works now for calls and messages?
I don't have any other SIM with me so I can't test it with my phone. You say going back to CM7 didn't help? I guess I shouldn't try that then.
Maybe flashing stock ICS would? Any other suggestions?
Click to expand...
Click to collapse
I haven't tried stock ICS yet; maybe it would? I will try that tonight.
Mine shows the SIM PIN on, when I try to change it it asks for my old code, which I don't have of course, so I can't remove the security. Been hoping that someone else would have had experience or knowledge of what would cause the problem and have a solution or suggestion to try. The closest I came was on a different forum about a Sony Ericsson phone, but the rooting and flashing procedures are so much different I couldn't see a solution in it, though they suggested flashing the baseband iirc.
HMMMM, now that I read your reply, I can't say with 100% certainty that the phone was unlocked before I rooted and flashed CM10.1.....I had thought it was but perhaps it wasn't, and we are having a more similar issue than I thought. So the glitch, perhaps, is that it was not unlocked, the custom ROM somehow "half" unlocked it, and here we are stuck.
Okay, my only thought then is to take it back to stock everything, the most up to date I can find, then unlock it with code, and see if I can change the APN at that point. If so, I will root it, use My Back Up Root to save settings including APN (just in case so at least I can restore it that way if I can't do it manually, after)flash CM10.1 again or another fabulous custom ROM which is what I really wanted in the first place
I will try that tonight, and post you the results. Let me know if you have any (better) suggestions as well, I'm up to try almost anything at this point. Was hoping to upgrade to this for my daily phone as I'm limping along with a Acer Liquid MT that has seen better days
If anyone has a link to quickly point me towards the latest stock ROM etc. and wants to post here, I would be much obliged Might save this noob a few hours scratching his head to find what is most certainly in front of my nose already, but I digress...
Cheers
New baseband
I just flashed V30A baseband, and it didn't help. We can cross that from the list.
Well colour me confused...and happy?
I just today picked this project up again, about to attempt a different fix, again...*sigh.
Lo and behold, i insert my sim and power on the phone, and it asks me for network sim unlock.....odd because I'd used the phone with this sim before, through all my other testing, flashed different roms, etc. etc. In fact, I've used the phone on this very package, I know because there are sms messages on the phone from using it. Battery pull, remove sim and check, yup sure enough, old messages there. Hmmm...
Insert sim, reboot, asks for unlock code again. Well, what have I got to lose at this point right? As I said before, I THOUGHT I had unlocked the phone before starting this whole debacle, but wasn't 100% certain about it. Searched my email for the code since I always save them, couldn't find it. Well, in for a penny, in for a pound I suppose. Bought a new unlock code, waited for it to arrive. Input new unlock code, unlock successful!!
Reboot phone....waiting for service....(this seems like forever!!! In reality, less that 60 seconds.) Alas, I have service. And now, just to tempt fate, Apps->settings->wireless & networks->more->mobile networks->access point names..........:fingers-crossed:
I can hardly believe my eyes, there it be, Rogers Internet apn selected. It even auto-detected the damn thing!!
I can offer no further insight, I don't believe I physically did anything to arrive at this remedy. But there you go, for my part at least it's solved.

No mobile network connection, no IMEI

Hello,
my Xiaomi Mi 9T Pro running on stock MIUI Global 12.5.1.0 (RFKEUXM) can now suddenly not connect to my mobile carrier.
I hope somebody can help me out.
Some facts and stuff I have tried:
The connectivity icon on the top is just grayed out now and shows an X.
But that was not the case in the morning today.
At that time it showed full bars, but not the usual 4G text and the mobile internet did not work. After some attempts written below it is now just gray.
Mobile internet and cell service do not work.
I have rebooted multiple times.
The IMEI for both SIM slots is shown as 0.
No baseband version is shown.
(I am sure that this was also not the case early in the morning.)
I have never installed a custom ROM on this device, bootloader was never unlocked.
The SIM card is correctly inserted and the phone number is shown in the settings for SIM slot 1.
Trying SIM slot 2 (incl. reboot) did not fix the problem.
The SIM status shows that the service is not available, also on the top left when the phone is locked. ("Dienst nicht verfügbar" in German locale.)
Trying the SIM in another phone works, which I think makes it not a carrier problem.
Trying another SIM in my phone also does not work.
I unfortunately had dropped the phone days before, but no damage visible at all (phone case FTW).
Also it worked without problems, which makes me hope this is not hardware related.
WLAN works, so internet connectivity is possible.
Phone is out of warranty.
I did search for other threads with similar issues, but they all seem to be related to having flashed custom ROMs and then losing the IMEI.
Does somebody have any idea how I can fix this?
Thank you!
Edit: I just remembered/saw that I did do the "Xiaomi Service Framework" system app update to version 6.0.6-G yesterday night, maybe that caused the problem? Currently researching on how to roll that back. If somebody knows, please do tell.
@Philipp said:
Hello,
my Xiaomi Mi 9T Pro running on stock MIUI Global 12.5.1.0 (RFKEUXM) can now suddenly not connect to my mobile carrier.
I hope somebody can help me out.
Some facts and stuff I have tried:
The connectivity icon on the top is just grayed out now and shows an X.
But that was not the case in the morning today.
At that time it showed full bars, but not the usual 4G text and the mobile internet did not work. After some attempts written below it is now just gray.
Mobile internet and cell service do not work.
I have rebooted multiple times.
The IMEI for both SIM slots is shown as 0.
No baseband version is shown.
(I am sure that this was also not the case early in the morning.)
I have never installed a custom ROM on this device, bootloader was never unlocked.
The SIM card is correctly inserted and the phone number is shown in the settings for SIM slot 1.
Trying SIM slot 2 (incl. reboot) did not fix the problem.
The SIM status shows that the service is not available, also on the top left when the phone is locked. ("Dienst nicht verfügbar" in German locale.)
Trying the SIM in another phone works, which I think makes it not a carrier problem.
Trying another SIM in my phone also does not work.
I unfortunately had dropped the phone days before, but no damage visible at all (phone case FTW).
Also it worked without problems, which makes me hope this is not hardware related.
WLAN works, so internet connectivity is possible.
Phone is out of warranty.
I did search for other threads with similar issues, but they all seem to be related to having flashed custom ROMs and then losing the IMEI.
Does somebody have any idea how I can fix this?
Thank you!
Click to expand...
Click to collapse
Did you check Settings, SIM cards and Mobile networks, SIM 1 (if SIM is in Slot 1)
Do you have Turn on? If Turned Off, then do Turn On
If not, ie if it does not recognize the SIM card, then it looks like a hardware issue
Assuming, as you say, that SIM card is ok, correctly inserted, and that phone runs only the stock firmware - hence no root, no custom ROM, no custom Recovery (that user could possibly wipe partitions), etc
Maybe, some connection got loose and later disconnected completely
Thanks for you answer.
I am sure the SIM is inserted correctly and working. It's been in there probably for years now.
Don't know if you saw my update above about "Xiaomi Service Framework". Checking that right now. Maybe I should just do a factory reset.
What I have noticed now a couple of times is that the phone crashes and reboots, just now happened when I connect for USB debugging or before when trying to enter the SIM pin after a reboot, ...
@Philipp said:
Thanks for you answer.
I am sure the SIM is inserted correctly and working. It's been in there probably for years now.
Don't know if you saw my update above about "Xiaomi Service Framework". Checking that right now. Maybe I should just do a factory reset.
What I have noticed now a couple of times is that the phone crashes and reboots, just now happened when I connect for USB debugging or before when trying to enter the SIM pin after a reboot, ...
Click to expand...
Click to collapse
But if the phone does not recognize the SIM card, it would not ask for the SIM pin
zgfg said:
But if the phone does not recognize the SIM card, it would not ask for the SIM pin
Click to expand...
Click to collapse
Agreed, therefore I am sure the SIM is recognized. The phone even shows my number and the SIM has the carrier name.
@Philipp said:
Agreed, therefore I am sure the SIM is recognized. The phone even shows my number and the SIM has the carrier name.
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Click to collapse
If the carrier name is recognized, then IMEI cannot be NULL
Very strange
Try to play with Preferred network type setting
Maybe something really got wrong with the updated Framework
zgfg said:
If the carrier name is recognized, then IMEI cannot be NULL
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Click to collapse
Oh, I though the IMEI is device specific and should be there even without a SIM inserted.
@Philipp said:
Oh, I though the IMEI is device specific and should be there even without a SIM inserted.
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AFAIK too - but without IMEI it could not attach to the network and therefore cannot show carrier name
Hence strange, and/or the contradictory descriptions/observations
zgfg said:
AFAIK too - but without IMEI it could not attach to the network and therefore cannot show carrier name
Hence strange, and/or the contradictory descriptions/observations
Click to expand...
Click to collapse
Ohh, sry there is a misunderstanding.
The carrier name is only shown as the NAME of the SIM card (I guess it is stored on there or the phone has remembered it). But there is NO connection or carrier name shown in the top notification bar.
@Philipp said:
Ohh, sry there is a misunderstanding.
The carrier name is only shown as the NAME of the SIM card (I guess it is stored on there or the phone has remembered it). But there is NO connection or carrier name shown in the top notification bar.
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Click to collapse
Yeah but you still have unknown IMEI - that's something that should have not happened
Anyway, go to Preferred Network Type and try with Prefer 4G, Prefer 3G or Prefer 2G - maybe, with the updated Framework, something went wrong with the bands support or so
If it wouldn't help, then I'm out of the ideas how to solve
So I did do a hard reset now, and it worked for a short time (IMEI is back), then it doesn't again, and ... just now again. It really is not stable.
Thx. I will post updates when I know more.
Unfortunately the phone keeps crashing and rebooting when using it. It just freezes and restarts, and sometimes it takes a long time to restart (seems like a crash loop).
Twice I also saw some graphic artifacts (bright magenta and green) on a small part of the screen.
I don't think this is just a mobile network connection problem anymore.
BTW: I have installed an older version of Xiaomi Service Framework (also the hard reset reverted it to a much older version), but that did not help.
Hey!!
I hope you doing great
Did you manage to solve the issue?
@Fawad Hussain
Unfortunately I could not solve it, so I am not able to use the device anymore.
Btw, as far as I can see there is no current smartphone without a notch/punch hole which is not gigantic (ASUS Rog Phone 6).
Fawad Hussain said:
Hey!!
I hope you doing great
Did you manage to solve the issue?
Click to expand...
Click to collapse
Same thing happened to me, I have managed to get it thanks to this guy in the video which I don't understand what he is saying but I just followed his steps, so if you are looking for a solution this video is.
But my device is not rooted and bootloader is locked, I tried ways but don't know how to root it or unlock bootloader properly

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