Hi, I recently started having trouble with my gf's phone (Nexus 4 running lollipop 5.0, lte enabled, tmo). It started shortly after I enabled a SIM lock pin on the sim, but not sure if that's the cause or not... The phone started to intermittently drop signal, and would not make calls (it would just appear to be dialing, but you'd hear no ringing and never connect). When I'd restart the phone, I could usually make a call. I tried to fix it by restoring everything the stock image, rechecking the apn, making sure stock radio was installed, etc, but the problem persisted and eventually got to the point that voice calls did not work at all. LTE and data worked to get onto the internet, but once a call was attempted to be made, it'd lose all signal. I discovered eventually that if I switched off lte/4g/3g, and only kept gsm 2g on, I could make a voice call. Next I tried her SIM card in my phone (Note 2 on Android 4.4, t-mobile) and as soon as I put her sim in, my phone started doing the same thing. After switching back to my SIM (that was working just fine, before), now MY phone is stuck with the same problem! (Can only make calls with just 2g enabled). I'm at a total loss. Has anyone experienced anything similar, or do you have possible solutions/ideas on how to fix this?
Flash stock and unroot you'll be fine
Sent from my Nexus 4
arkangel72 said:
Flash stock and unroot you'll be fine
Sent from my Nexus 4
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I flashed back to stock image a couple of times via wugfresh toolkit, but got the same results each time. I did, however, just fix my note 2 by removing my sim (the one that was previously working), flashing stock via odin (didn't help in recovery), and then replacing the original sim. This leads me to believe that the sim in the n4 is somehow corrupted and once loaded, permanently changes some settings somewhere. (I hope that's the problem, and not the phone). I'll pick up another sim card from tmo tomorrow and try flashing stock again before loading it. Any idea what would cause this? The only thing I did different was set up sim lock on the card, and it seemed to work just fine for a while, till it didn't... Thanks for the help, I'll let you know if the new sim works.
Solved
For anyone who may be having the same problem, here is how I solved it. I picked up a new sim card from t-mobile, flashed a stock rom via toolkit (with the sim card not installed), loaded rom, installed sim, loaded correct apn. Everything works as it should now.
Hi all,
I have a strange issue that I don't know how to fix.
This evening while using my phone I suddenly got SIM card not recognized message. I have tried these things to no avail:
-In "Settings" I can find my networks but my phone won't connect on them
-Powering down, pulling my SIM card out and reinserting it. No change
-Since I'm on CM12 I did factory reset and rolling back on previous versions of Nightly's. Still no change
-Again doing factory reset and installing SlimKat 9.0. No change
-Rolling even more back after another full wipe to SlimKat stable 7.0. Still got "Insert Sim Card"
I have flashed latest modem and bootloader when I migrated from SlimKat to CM12 since I was loosing signal when locking phone and that worked all until this evening.
Can anyone help please?
EDIT:
The model is GT-I9505 jfltexx
Update:
Just installed, again, 2/3G and LTE modems... no change
Inserted SIM card fro my wife... no change
You likely have a hardware issue. But before you go and replace the SIM card slot, revert to a stock ROM and see if that resolves the issue. Start with stock 4.4.2 and see if that works, then roll back to stock 4.2.2 if it doesn't. With luck, rolling back to one of the stock versions will resolve your problem. If it does, then you should be able to migrate back to SlimKat. If it doesn't, it will cost you about $10 USD (€9.41, BAM/KM18.35).
I encountered the same issue, and in my case not only was the SIM tray damaged but I had also lost my SIM unlock. Only by downgrading to 4.2.2 was I able to figure out that the SIM unlock was gone, but it wasn't until I had replaced the SIM card slot that I could do something about it.
Hey guys! yesterday I just downgraded my device(i9500) from stock lollipop to cm11 and what I realized was that the network signals were gone. Although phone is detecting sim card as I'm able to see all the saved contacts even I am not signed-in with gmail account. I tried restoring the EFS I made when I was on a custom touchwiz lollipop ROM but I think there's something wrong with that backup as that didn't work for me. I know simply flashing the firmware using ODIN would solve my problem but I haven't got internet connection these days neither time as my exams are going on. I've only got 20MB of data to use everyday. So, I can't download firmware as its size ranges in GB's.
I've installed back stock ROM but problem didn't solve. The problem isn't with IMEI as I'm able too see it. Instead of the network name on the status bar when in lock screen , I'm seeing EMERGENCY CALLS ONLY message
Please help me. Better send me the backup of EFS! Thanks in advance
Could be that your SIM tray broke and it simply coincided with the ROM flash.
Hello,
I had CN ROM version with Kit Kat. Everything worked fine but one day I lose sim cards. I mean sim cards weren't detected and WiFi was 'Switching On' I mean flashing. Phone is constantly restarting by itself. I've done several factory resets, take out the battery and flashed phone with ROW ROOM (I've change the NON-HLOS file to get network) but nothing helped. Flashing went ok and I've got new ROM.
Phone is restarting after few minutes. I can not switch on WiFi and sim cards are not detected. Do you have any solution for that?
Thank you!
Hello,
I have a verizon g2 vs980, i have stuck into some kind of a sim signal issue which i cant seem to be able to get resolved, so basically i have the phone rooted with twrp installed and on top of that crdroid 7.1.2 rom is installed on it. On this rom the sim works for which i have a backup in my phone, now the problem is that if i install any other rom in my phone, sim gets detected but i get no signals, i have checked several roms and none seem to work for me. This problem happens even if i install the same crdroid rom with clean install. Only way to get signals back is to install vs98039a stock rom with modem and bootstacks of the same version and then restoring the previous backup. Im in a weird situation right now as my mic somehow has stopped working on this backup and its also a software issue, cuz when i install another rom i get mic functioning properly, but ofcourse sim doesnt work on any rom afterwards. Can somebody help me here?