[Q] Modem issues - cannot make calls or connect to 3g.

[Arachnid92]

Yesterday, my 2013 Moto X (international model) started behaving VERY strangely. My 3g connection just died, and I stopped being able to make or receive calls - SMS works fine though, and my signal is very strong.

I can't make calls, the call just dies before even trying to ring, and people calling me just go straight to voicemail. Also, in the status menu my Network Type and Phone Number are listed as Unknown. I also tried rebooting into "Factory" mode through the Bootloader and found that my phone ICCID is also listed as Unknown. IMEI is fine though. It's so weird and frustrating.

I called my cellphone service provider (Movistar Chile), and they reset my network profile and gave me a new SIM card as well, to no avail whatsoever. The problem still persists even after a reflash (through fastboot) of the stock 4.4.4 firmware.
Is my phone dead? Or could it still be a solvable issue, be it network or phone fault?

 

[Darth]

If sms works and not phone, it's not your radio connection to the carrier, so sounds like a carrier issue if reinstalling firmware didn't help.

Did you do anything at all to your device before this happened? Though reflashing firmware should have corrected anything.

I'd be calling the carrier again.

---------- Post added at 07:18 AM ---------- Previous post was at 07:17 AM ----------

If it were hardware, Usually sms wouldn't be working either.... Usually.

 

[Arachnid92]

If sms works and not phone, it's not your radio connection to the carrier, so sounds like a carrier issue if reinstalling firmware didn't help.

Did you do anything at all to your device before this happened? Though reflashing firmware should have corrected anything.

I'd be calling the carrier again.

---------- Post added at 07:18 AM ---------- Previous post was at 07:17 AM ----------

If it were hardware, Usually sms wouldn't be working either.... Usually.

No, that's the weird thing. I hadn't done anything to the device before it happened, I was literally just chatting through the Facebook Messenger app when my data connection died and it hasn't reconnected since then.

I did call my carrier again, and they issued a ticket to tech support, so I guess I have to wait for their resolution as well.

 

[Darth]

Wait, sms works... But not phone calls Or data?

 

[Arachnid92]

Wait, sms works... But not phone calls Or data?

Precisely. I can SEND and RECEIVE text messages, but I can't MAKE or RECEIVE phone calls, and data is completely disconnected.

 

[Darth]

Not sure about phone, but for data... Google your carriers APN settings and see they match yours. In mobile settings, access point names.

---------- Post added at 08:54 AM ---------- Previous post was at 08:52 AM ----------

Did you completely flash everything with fastboot and mfastboot?

Have you tried RSD Lite? Same Android version for your exact model of course. (this will wipe your phone completely.... Do backup anything important and transfer off the phone)

 

[Arachnid92]

Not sure about phone, but for data... Google your carriers APN settings and see they match yours. In mobile settings, access point names.

---------- Post added at 08:54 AM ---------- Previous post was at 08:52 AM ----------

Did you completely flash everything with fastboot and mfastboot?

Have you tried RSD Lite? Same Android version for your exact model of course. (this will wipe your phone completely.... Do backup anything important and transfer off the phone)

1. Yes, I already tried that. APN's are correct, I deleted and re-entered them just in case anyway. No change.
2. Yeah, I actually reflashed twice with different stock firmwares for different carriers with fastboot and mfastboot.

 

[Darth]

Well, it's sounding like hardware failure then unfortunately.

The only other thing to check, is that you have the correct radio installed. If you flashed stock, you should... But I'd double check. I don't have the answer to which is the correct one for you, you may need to search on that, or hope you can find someone here to compare too.

---------- Post added at 09:31 AM ---------- Previous post was at 09:29 AM ----------

If you are within warranty period... You may want to go that route.


With sms working, I still suspect sim/carrier issue... But if they are no help, what can you do.

 

[Arachnid92]

Yeah I know, I starting to fear hardware failure myself. I guess I'll wait to see if the carrier fixes it, otherwise I'll have to get a new phone :/

 

[linuxgator]

It could also be an issue with your SIM card. Maybe try turning the phone off, removing SIM and booting. Then Turn it off again and re-insert the SIM and boot again. You can also see if your local carrier store has another SIM card that they can test it with.

 

[Arachnid92]

It could also be an issue with your SIM card. Maybe try turning the phone off, removing SIM and booting. Then Turn it off again and re-insert the SIM and boot again. You can also see if your local carrier store has another SIM card that they can test it with.

I got a new SIM card from my carrier yesterday, after I complained. Problem persists.

 

[Arachnid92]

Finally, I took the phone to the official Motorola service where I live and they confirmed it was a hardware fault, and as I had unlocked the bootloader I'd have to pay an outrageous amount for them to fix it (motherboard had to be replaced). So I decided to get a new phone instead, and now I happily own a brand new Nexus 5.

Thanks for the help anyway