Nexus 6P: Calling Issues — Cannot Make Calls, but Data/Texting Works (Verizon) MHC19I

[TwiggieSmalls]

Hello, so I found a thread from back in december on this topic and I have not been able to resolve it using any
methods recommended in that thread, which is located here: http://forum.xda-developers.com/nex...s-make-calls-data-t3270877/page3#post66004179

So I'm hoping by showing some comments I left their recently, on a new thread with the MHC19I build, that someone will be able to point me in the right direction.

I'm pretty noobish when it comes to jargon and perhaps "technical" procedures to get my phone back in working order, so a detailed list and step-by-step guide is always the best for me. Thanks a TON for looking into it!

Quote:
Originally Posted by un9a7y
I have the exact same problem with my phone and I don't know what to do.
update: I just flashed the efs backup file and it worked again.

which efs file?

I have efs1.emmc.win and efs1.emmc.win.md5
Exact same with efs2.

---------- Post added at 04:18 PM ---------- Previous post was at 03:20 PM ----------

Quote:
Originally Posted by Exec360
[*]Do you get an IMEI number in the Settings application? (don't put it here for privacy reasons) If you don't, then your issue most likely has to do with accidentally deleting or modifying the EFS partition. Try restoring an EFS backup. ALWAYS back up your EFS before you install something else or root your phone — and keep it in a safe location! Alas, that was not the case for me.[*]Try the field test mode (*#*#4636#*#*) in the phone application. Go to "phone info".
If you see "GSM service: emergency calls only" on Verizon, the GSM band is not connected which makes phone calls. Switch to Band 6.
Otherwise, if you see the same thing for GPRS, try switching to another band. I'm not familiar with carriers except Verizon or other US carriers (AT&T, T-mobile, etc.)[*]I've emphasized this a lot, but try a factory reset. Lock the bootloader and remove your custom mods to the system. It may just work for you.[/LIST]

As for me: Yes I get an IMEI when I go look in settings. I have an EFS backup but I don't really know which one to use?
I have efs1 and efs2 both as an md5 and another version?
I don't know which one to use.

I tried the field test mode and I do see that "GSM Service: Emergency Calls Only" and I tried switching to all bands available to me... but I dont have band 6 as an option.

If you could link me to a way to literally do a factory reset and how I can lock the bootloader and go back and start over from stock I would gladly try.

Thanks for any help, this problem has vexed me for a week now.

 

[TwiggieSmalls]

Hello, so I found a thread from back in december on this topic and I have not been able to resolve it using any
methods recommended in that thread, which is located here: http://forum.xda-developers.com/nex...s-make-calls-data-t3270877/page3#post66004179

So I'm hoping by showing some comments I left their recently, on a new thread with the MHC19I build, that someone will be able to point me in the right direction.

I'm pretty noobish when it comes to jargon and perhaps "technical" procedures to get my phone back in working order, so a detailed list and step-by-step guide is always the best for me. Thanks a TON for looking into it!



which efs file?

I have efs1.emmc.win and efs1.emmc.win.md5
Exact same with efs2.

---------- Post added at 04:18 PM ---------- Previous post was at 03:20 PM ----------


As for me: Yes I get an IMEI when I go look in settings. I have an EFS backup but I don't really know which one to use?
I have efs1 and efs2 both as an md5 and another version?
I don't know which one to use.

I tried the field test mode and I do see that "GSM Service: Emergency Calls Only" and I tried switching to all bands available to me... but I dont have band 6 as an option.

If you could link me to a way to literally do a factory reset and how I can lock the bootloader and go back and start over from stock I would gladly try.

Thanks for any help, this problem has vexed me for a week now.

So I was able to fix my problem only by restoring my 6.0 MDB08L backup and my EFS backup of the same build.
I see that my phone is still rooted and I have an OTA update available...

Advice?
I really love flashing ROMs, Kernels, and other things to get the most out of my device, I just don't know what would happen if I took the OTA update; or what steps I need to take from here to get back up to where the current builds are in March for ROMs (6.0.1)

My TWRP is still 3.0.0-1 as well (I have not verified if this is still working post restore) so I'm wondering if I need to fastboot an older recovery?

Any help would be greatly appreciated!

 

[murphyjasonc]

If you haven't flashed the latest radio yet you can start by downloading it from Heisenberg's thread. Here is the link: https://www.androidfilehost.com/?fid=24457741883933255 He also has an excellent guide that will tell you everything you need to know to get you to the latest version. You can find it here: http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928. You can download the newest vender image and flash in TWRP from the Pure Nexus thread or from herehttps://mega.nz/#!Rxh10IKT!j16HfnDor_RLt97qm8yorEB1AgKH2ezEG5zg_kKRxgY. I'm on Verizon also and the same issues as you with not being able to make or receive calls. Flashing the chroma ROM fixed it for me.