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[Q] SIM card broke my two phones (can only make calls while just 2g is enabled)

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
Click to expand...
Click to collapse
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.

WiFi will not turn on due to no Sim Card

I've searched for 2 months trying to figure this out. Basically my sim card will not be read due to the hardware issue so it is the motherboard, now the problem is i cannot enable WiFi due to not having a sim card inside the phone...when i was on 4.4.4 it says Smart Network Switch and something about not being able to enable due to no sim.....well i tried a custom rom to see if it would remove that feature which it didnt so i went back to 4.4.2 and it doesnt have the smart network switch but it still doesnt allow WiFi to turn on....now the funny thing is before i had the Sim problem i had WiFi on and it stayed working after the sim stuff happened, I factory reset my phone when i was going to install a custom rom before evening knowing WiFi wouldnt work without a Sim so obviously to my surprise when i went to turn on WiFi it wouldnt work, seems like the S4 has a stupid feature imo that if you dont insert a Sim it wont allow WiFi to be turned on. Can anyone tell me if under root or something i can get rid of that feature or some how turn on WiFi in the files or root section of the phone?

nickwmcnamara said:
I've searched for 2 months trying to figure this out. Basically my sim card will not be read due to the hardware issue so it is the motherboard, now the problem is i cannot enable WiFi due to not having a sim card inside the phone...when i was on 4.4.4 it says Smart Network Switch and something about not being able to enable due to no sim.....well i tried a custom rom to see if it would remove that feature which it didnt so i went back to 4.4.2 and it doesnt have the smart network switch but it still doesnt allow WiFi to turn on....now the funny thing is before i had the Sim problem i had WiFi on and it stayed working after the sim stuff happened, I factory reset my phone when i was going to install a custom rom before evening knowing WiFi wouldnt work without a Sim so obviously to my surprise when i went to turn on WiFi it wouldnt work, seems like the S4 has a stupid feature imo that if you dont insert a Sim it wont allow WiFi to be turned on. Can anyone tell me if under root or something i can get rid of that feature or some how turn on WiFi in the files or root section of the phone?
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Click to collapse
I have a similar problem. I have an AT&T S4 I337 that was used with Net10 Network and had the intermittent sim disconnecting problem but it was working well when ik worked. After I changed the Net10 sim to an AT&T non subscribed sim the Wifi, GPS and Bluetooth stopped working. I thoug hit was some firmware problem so I decided to Odin flash the NB1 Rootable Firmware but the problem persist ( can turn wifi and bluetooth on, and GPS turns on but cant get a location). I also tried the complete stock version of NB1 and also did not work. I constantly get a security Notice saying "Unauthorized actions have been detected. Restart your phone to undo any unauthorized changes". I restart but the problem persist. It seems to reboot into a Recovery booting and then restarts. The thin is that the Knox counter is still 0x0.
Did you resolve your problem? If not could some one help us PLEASE!!!!!!:crying:

Any one with that could help me identify the problem?

Verizon had it working, but now on replacement axon7, no more VOLTE

Hi, I'm hoping someone else on verizon can help me here.
I am on TW (mvno) but verizon works the same, i just dont get all the towers as a full verizon customer does.
Anyway here is my setup. I have a axon 7 running RR 6.0.0-20180511, hellsgate 3.18.109, ver 2.3 & baseband TH.2.0.c1.9-. I think I have B12 bootstack but I'm not sure about that. VOLTE works great on this my org axon 7.
Now replacement came in cuz I have the screen goes half gray issue. Here is the problem. I loaded up my current setup via twrp nfound 3.2.1-7 and everything works its exactly duplicated in every way except for the change I made to go to f2fs on data and cache. I also tried a different bootstack B10-B32 same results so its not related to bootstack or modem as that is the same.
What is really odd is I can pull the sim tray and the option for "enhanced 4g LTE mode" shows up, I put the sim back in and it disappears. My thinking on this is its something to do with the phone trying to confirm my sim capabilities and not being able to. I went over to testing mode and I can try a million times to turn on VoLTE with no change at all after multiple reboots. I also tried sim swaps with old none active tmobile sims and a partially active at&t sim. This did about the same as the sim tray pull out & allowed me to see enhanced 4g LTE mode for as long as that sim was in place and as soon as I swap back to my sim it disappears.
So what is the issue? Could it be the sim & IMEI? Or is it just something on the phone (hidden trigger) that I need to change over. As I said I had this all working, on my org axon 7 with same rom, kernel, bootstack and modem. SO what gives?

I had this same issue. When you got your new phone, did you call Verizon and have them add your IMEI to their database? That's what did the trick for me.

Hardware Issue: Moto G5 Plus not connecting to network

Hi All, I have a Moto G5 Plus XT1686 from India. Since yesterday, the both SIMs don't register with the network, even if it does register I am unable to make./receive calls nor messages. I had tried Network reset, From Phone information changed settings to LTE/WCDMA even Factory reset. My phone is still boot loader locked. Anything I could do to reset the phone to working state, before I could get a new SIM. I dont have another phone from which I can check if this is a SIM problems, however I am trying to check that as well.

The problem occured after updating to oreo?

antojamez said:
The problem occured after updating to oreo?
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Just before installation, while the notification came up. Oreo seems to work fine, finally narrowed it down to the SIM connectors, so need to get that replaced.
SIMs seems to work fine.

fordac said:
Just before installation, while the notification came up. Oreo seems to work fine, finally narrowed it down to the SIM connectors, so need to get that replaced.
SIMs seems to work fine.
Click to expand...
Click to collapse
I had the similar issue after oreo update. When i checked *#*#4636#*#* in phone info it showed radio off.
I solved it by flashing modem from the Oreo flashable zip of Soak test 1 and everything is working fine now.

OP6T VOLTE and signal?

So yeah got the phone 2 day ago and pop my sim card in everything work as it should...call verizon they do add the CDMA-less SMS work..si,i do bootloadee unlock...and after roo with magisk...i do a,couple module and end up boot loop so i try use a fastboot Rom Stock by Mauronofrio but after reboot i got issue with VOLTE and after 5 minit the signal complete gone...but the weird thing after setup everything up and i figure it out trying to swith sim to slot 2 and bam everything work but today somehow it got the same way as sim slot 1 everything gone...no VOLTE or signal...it just said no service! I been try stock using same fastboot method and even relock bootloader....i check the imei under phone setring it still there and still no luck and definitely switch my sim back to my old phone and everything work...call and VOLTE,Data..i think it a software issue on my OP6T...my question is does there a,tool or such to do fully flash stock include all partition like LG phone has LGup! TIA

Well im on with Verizon tier 2 now...i dont think it a software issue...if software issue when i switch to sim slot 2 it stil not gonna work

Same problem
I am on stock. and having exactly same issue. so not a software issue.
On Verizon cdma less provosioned all worked well for a week. The suddenly no volte and no signal. After a few hours signal is back but still no volte. switched verizon sim from slot 1 to slot 2 and now all work fine.
did you get a solution?