Develop Bugs

e980 No service/No signal after flash.

Hi, this a weird problem for my new e980, i flashed properly the e980 at&t rom, and now i dont have signal, i tried flashing modem.img from here and nothing, still no signal, also tried to flash the telcel kdz and nothing, my IMEI is ok, but i dont have signal, is like is trying to finding signal, sim card is ok, working in other phone, please, somebody can help me please?

Come on guys, hope one of you can help me, this is happening after flashed a 5.0 lollipop for F240K, I think, I converted my e980 to F240K, but now the signal isn't working even his own baseband, I really need your help guys, please!!!

Have you tried going back to stock jb?
Start from jb. It's the most stable version we have.
Then you can root and install twrp from flashify. It's the most up to date recovery we have. Forget about the others because they can be buggy.
After that you can choose whichever room suits you. But I'd recommend SlimLP...

g0at1 said:
Have you tried going back to stock jb?
Start from jb. It's the most stable version we have.
Then you can root and install twrp from flashify. It's the most up to date recovery we have. Forget about the others because they can be buggy.
After that you can choose whichever room suits you. But I'd recommend SlimLP...
Click to expand...
Click to collapse
I tried, no signal, I updated it manual via the software to KK also for test and nothing.
PD: I tested the E989 modem from another guy and now I have signal, but only WCDMA and GSM, I don't have LTE, also the 3G, H and H+ aren't working properly. Help please

carl_villa1 said:
I tried, no signal, I updated it manual via the software to KK also for test and nothing.
PD: I tested the E989 modem from another guy and now I have signal, but only WCDMA and GSM, I don't have LTE, also the 3G, H and H+ aren't working properly. Help please
Click to expand...
Click to collapse
You'll probably have to flash Telcel firmware first (E980H variant I think, not sure if Telcel or something else), then AT&T firmware to get your network back. Also, you must do a full (CSE, if I'm not wrong, haven't started LGFlashTool in a while ) flash, with complete internal wipe - "update" flash just changes system, boot and recovery, not modem/firmware images which are ones you need... Also, you MAY try flashing madmack's modem (it's ripped from AT&T E980 firmware) before flashing OEM images...
I really don't understand why are you people messing with modem images and other stuff like that at all... especially without backups. Last year I had to mess with nearly 10 phones from my friends/associates, because they got their modem/efs images broken/corrupted trying to flash something which isn't made for their device...

Actually did it, not working with AT&T rom, Tried with telcel then I flashed AT&T rom and nothing, nothing is working for me, tried the madmack modem file and nothing works. still no signal

Have you done a FULL flash? Are you sure you have E980 variant (difference between E98x variants is literally in modem firmwares)? This more looks like you have flashed wrong stock firmware.

ShadySquirrel said:
Have you done a FULL flash? Are you sure you have E980 variant (difference between E98x variants is literally in modem firmwares)? This more looks like you have flashed wrong stock firmware.
Click to expand...
Click to collapse
Shady, I really apreciate your help, thanks for answer, my friend sell me that phone, he said is a E980, but after see the imei is a E981h version for argentina where I live, before flash the korean lollipop, my 4G works perfect, now I dont have signal, I tried the E980 and well, not signal, I tried E981h too because is a variant from south america too and maybe can work and actually is the real stock firmware for my phone, no signal, nothing.. I tested the phone with 2 firmwares from E989 (1 from Brazil the other one is from CHILE) and is working but only WCDMA 3G and sometimes the signal drops and I only have 16gbs for storage.
More clear, this is my summary.
1) E980 Firmware from AT&T, Telcel and Panama = No signal
2) E981h Firmware for my E981h, Stock Retail and Movistar Telefonica KitKat and JellyBean = NO SIGNAL
3) E989 Firmware from Brazil Retail and Chile Claro = Just WCDMA and signal drops.
4) Custom ROMs? Just tried the CloudyGX 1.0 with E980 patch and E988 just for test = NO SIGNAL
I can't find the problem, also my phone was in the service before this and was totally useless for them, but I think these guys wasn't too profesional for be honest, i'm pretty sure.

carl_villa1 said:
Shady, I really apreciate your help, thanks for answer, my friend sell me that phone, he said is a E980, but after see the imei is a E981h version for argentina where I live, before flash the korean lollipop, my 4G works perfect, now I dont have signal, I tried the E980 and well, not signal, I tried E981h too because is a variant from south america too and maybe can work and actually is the real stock firmware for my phone, no signal, nothing.. I tested the phone with 2 firmwares from E989 (1 from Brazil the other one is from CHILE) and is working but only WCDMA 3G and sometimes the signal drops and I only have 16gbs for storage.
More clear, this is my summary.
1) E980 Firmware from AT&T, Telcel and Panama = No signal
2) E981h Firmware for my E981h, Stock Retail and Movistar Telefonica KitKat and JellyBean = NO SIGNAL
3) E989 Firmware from Brazil Retail and Chile Claro = Just WCDMA and signal drops.
4) Custom ROMs? Just tried the CloudyGX 1.0 with E980 patch and E988 just for test = NO SIGNAL
I can't find the problem, also my phone was in the service before this and was totally useless for them, but I think these guys wasn't too profesional for be honest, i'm pretty sure.
Click to expand...
Click to collapse
Custom ROMs won't do a thing because they are using firmware images on your modem partition.
IMEI says it's E981H Argentina, but it doesn't work with that firmware? What the hell... What's written on your phone's case? There is a model mark on the housing, after you remove back panel. I have E988 (Open TW variant), markings say E988/E989. In the end, ask your friend where he/she got it, that may help identifying it...

ShadySquirrel said:
Custom ROMs won't do a thing because they are using firmware images on your modem partition.
IMEI says it's E981H Argentina, but it doesn't work with that firmware? What the hell... What's written on your phone's case? There is a model mark on the housing, after you remove back panel. I have E988 (Open TW variant), markings say E988/E989. In the end, ask your friend where he/she got it, that may help identifying it...
Click to expand...
Click to collapse
He sends me the box also, is in my house now, I'm working at the moment, he got the phone in a normal store, is 100% original, let me check the model inside of the phone.
EDIT: its says "E980_0805"

carl_villa1 said:
He sends me the box also, is in my house now, I'm working at the moment, he got the phone in a normal store, is 100% original, let me check the model inside of the phone.
EDIT: its says "E980_0805"
Click to expand...
Click to collapse
This may be risky, but you already flashed F240K firmware and kept your device alive. Have you tried flashing E988 firmwares?

ShadySquirrel said:
This may be risky, but you already flashed F240K firmware and kept your device alive. Have you tried flashing E988 firmwares?
Click to expand...
Click to collapse
Is my first time with an LG Phone, is a really weird problem for me at least, Never tried with a E988 Firmware, what firmware is good for flash? just asking because you have E988 and probably you know which one is good.

carl_villa1 said:
Is my first time with an LG Phone, is a really weird problem for me at least, Never tried with a E988 Firmware, what firmware is good for flash? just asking because you have E988 and probably you know which one is good.
Click to expand...
Click to collapse
I'm using E988_V10 firmwares for TWN variants, best base for my device, especially since I'm using AOSP/CM roms

ShadySquirrel said:
I'm using E988_V10 firmwares for TWN variants, best base for my device, especially since I'm using AOSP/CM roms
Click to expand...
Click to collapse
Got it, I'm going to test in few hours, I'm working now. Thanks!

ShadySquirrel said:
I'm using E988_V10 firmwares for TWN variants, best base for my device, especially since I'm using AOSP/CM roms
Click to expand...
Click to collapse
Tried, with the E988 Rom only works GSM.
EDIT: Flashed argentinian MODEM e981h and i got 3g for first time but drop fast.

carl_villa1 said:
Tried, with the E988 Rom only works GSM.
EDIT: Flashed argentinian MODEM e981h and i got 3g for first time but drop fast.
Click to expand...
Click to collapse
Weird, E988 is basically international one, should work everywhere. Check preferred network type in network settings.

ShadySquirrel said:
Weird, E988 is basically international one, should work everywhere. Check preferred network type in network settings.
Click to expand...
Click to collapse
Yes, works but only GSM, no WCDMA and 4g, but I flashed the argentinian modem and i get a low WCDMA, is like the signal is very low in that rom, but not 4G or GSM.
Yes, I checked the preferred network in #*#*4636#*#*# and only works with WCDMA also tried the change the band in that menu but was useless, signal drops and 3G isn't working. Also tried in the options of the phone and the same result.
Tried the 3845#*988#* for configurate baseband and no luck. :l this is real a good problem, but I can confirm, the E988 at least works the argentinian modem with WCDMA but signal drops fast.

carl_villa1 said:
Yes, works but only GSM, no WCDMA and 4g, but I flashed the argentinian modem and i get a low WCDMA, is like the signal is very low in that rom, but not 4G or GSM.
Yes, I checked the preferred network in #*#*4636#*#*# and only works with WCDMA also tried the change the band in that menu but was useless, signal drops and 3G isn't working. Also tried in the options of the phone and the same result.
Tried the 3845#*988#* for configurate baseband and no luck. :l this is real a good problem, but I can confirm, the E988 at least works the argentinian modem with WCDMA but signal drops fast.
Click to expand...
Click to collapse
Have you tried to download your firmware from lg website?
Try to Google it. There might be tutorials telling you how to do this using your imei number. Then, you'll find the correct firmware.
Remember, you should use an LG website link to be secure in the use of your imei.
Edit: try that link
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=<MYIMEI>
Note that you have to substitute MYIMEI for your imei. I'm not sure if you have to keep the brackets. So try both possibilities and see which works.
Edit 2: now I remembered all the steps.
Once you insert the imei without brackets you will have info on your firmware. Notice that in the central area of the page you have a link that ends in .kdz
Copy that link and insert it in your browser's address bar. That will prompt you to download your correct firmware.
That firmware will most likely be E98120X... Or the KK version...
After downloading it, change the 20 in the link for a 10...
Doing this you should be able to download the JB version. This is the most stable version for our devices (the KK version has a bug on the modem that keeps the device awake when it shouldn't).
If you succeed, flash the JB version, the one with the number 10 using the CSE option in the flash tool.
After that, you should be up and running and able to flash any custom rom without the risk of signal drops.
Oh, have in mind that if you want to use 4g you will have signal drops. This is also a bug of our devices. It works best in 3g. Every time you have to reboot, change from 4g to 3g, when signal is back on change again to 4g and you'll have it working with few hiccups...
Don't forget to keep backups of your firmware and report if you succeed.

g0at1 said:
Have you tried to download your firmware from lg website?
Try to Google it. There might be tutorials telling you how to do this using your imei number. Then, you'll find the correct firmware.
Remember, you should use an LG website link to be secure in the use of your imei.
Edit: try that link
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=<MYIMEI>
Note that you have to substitute MYIMEI for your imei. I'm not sure if you have to keep the brackets. So try both possibilities and see which works.
Edit 2: now I remembered all the steps.
Once you insert the imei without brackets you will have info on your firmware. Notice that in the central area of the page you have a link that ends in .kdz
Copy that link and insert it in your browser's address bar. That will prompt you to download your correct firmware.
That firmware will most likely be E98120X... Or the KK version...
After downloading it, change the 20 in the link for a 10...
Doing this you should be able to download the JB version. This is the most stable version for our devices (the KK version has a bug on the modem that keeps the device awake when it shouldn't).
If you succeed, flash the JB version, the one with the number 10 using the CSE option in the flash tool.
After that, you should be up and running and able to flash any custom rom without the risk of signal drops.
Oh, have in mind that if you want to use 4g you will have signal drops. This is also a bug of our devices. It works best in 3g. Every time you have to reboot, change from 4g to 3g, when signal is back on change again to 4g and you'll have it working with few hiccups...
Don't forget to keep backups of your firmware and report if you succeed.
Click to expand...
Click to collapse
Hi, the 10 version isnt available in that web using my imei, the only one is from carrier, Telefonica Movistar, I tried with that and not luck.
Edit: got it via google, I'm going to test in few mins.

carl_villa1 said:
Hi, the 10 version isnt available in that web using my imei, the only one is from carrier, Telefonica Movistar, I tried with that and not luck.
Edit: got it via google, I'm going to test in few mins.
Click to expand...
Click to collapse
Good. Now that you know the exact "name" of your rom you can Google the JB version (the one with number 10).

[Guide] HTC 10 au (Japan carrier) variant

Since there is no resource thread for this variant, I decided to create this one for the little community using this on XDA.
First of all, some warnings:
- Custom ROM and kernel do not work so do not attempt to try, it would just be a waste of time. Even if the ROM work, you will not have signal and there will be bug. So if you are not a ROM developer looking to support this variant, I suggest staying away.
- Debranding to unlocked/international variant is not possible. At best you will only soft brick, at worst you could brick your device.
- Since there are no RUU and none will be available in the near future, always have a stock back up at the ready.
- Root is only achievable with Sunshine through temproot and S-Off. So if you are not prepare to pay or for the risk, stay away as well.
Now, on to the main disk
Here is the link to the most recent OTA:
http://fotadl-az.htc.com/secure/OTA...1.28.970.6_release_485495lwhgdc5g85j4uwwh.zip
Contain in here is the stock recovery and other image if you need.
Guide to root. As mention above, will S-off your phone.
Guide to receive OTA after root.

can i get the radio.img for this device on au? im trying to get my US unlocked edition to work on au, i flashed verizon radios, and it does work, but i only get 3g data.

Quadrider10 said:
can i get the radio.img for this device on au? im trying to get my US unlocked edition to work on au, i flashed verizon radios, and it does work, but i only get 3g data.
Click to expand...
Click to collapse
Extract from firmware.zip and see. Report back.

The problem is I can't find and firmware for the Japan variet.

If the first post is the au OTA, it has radio.img

andybones said:
If the first post is the au OTA, it has radio.img
Click to expand...
Click to collapse
i tried it, but for some reason, it did not work...

I think it can be converted to Unlocked one after s-off, you may try

Quadrider10 said:
i tried it, but for some reason, it did not work...
Click to expand...
Click to collapse
What was the error?
No signal, or unable to get the radio.img from post1

No signal or data. For some of reason, the only radio that works is Verizon's. but I only get 3G data and it registers as no signal even though I have data, make calls and texts.

thanks so much, im from japan and my phone was root, im looking for this.
Can you upload the stock room off AU or stock back up here?

Quadrider10 said:
No signal or data. For some of reason, the only radio that works is Verizon's. but I only get 3G data and it registers as no signal even though I have data, make calls and texts.
Click to expand...
Click to collapse
Did you try wiping modems?
In download mode using ADB issue the commands:
Fastboot erase modemst1
Fastboot erase modemst2
Fixed my 3g issue. But this was from a Different issue.
Won't hurt to try..

Thanks. I'll give that a shot

those ADB command will not work. says failed partition erase not supported
EDIT: nvm i ran it in the bootloader and they seemed to work, however i am still not receiving signal on my 10 with us unlocked. it seems the only way to receive the KDDI au signal at all is to flash verizon's radio.

au has a funky system authenticating the phone with an ID system which is embedded within the stock ROM. I don't know whether it is possible to have signal with an unlocked model. That's the only thing keeping me from flashing a custom ROM on the phone. Maybe some ROM developer could take a look into that?

I did notice that if u flash the Verizon radio, then install a ROM while choosing unlocked dev edition, as the provider, you get signal and bars, but this breaks my 5ghz wifi capability for some reason and I only received 3g at speeds of 1.5mpbs download. So not really worth it. Is there an ruu for the Japanese HTV32 out there that would flash in my 10?

Quadrider10 said:
I did notice that if u flash the Verizon radio, then install a ROM while choosing unlocked dev edition, as the provider, you get signal and bars, but this breaks my 5ghz wifi capability for some reason and I only received 3g at speeds of 1.5mpbs download. So not really worth it. Is there an ruu for the Japanese HTV32 out there that would flash in my 10?
Click to expand...
Click to collapse
There are no RUU yet, have you tried flashing the radio from the OTA?

nerodarknight said:
There are no RUU yet, have you tried flashing the radio from the OTA?
Click to expand...
Click to collapse
yes, it didnt work... lol

Can some one upload a stock or stock backup for HTC 10 Japan please!

http://hanpenblog.com/4640/
Good news guys, I just found this website with links to download the RUU for the original firmware and all OTA up to date if anyone needs them.

nerodarknight said:
http://hanpenblog.com/4640/
Good news guys, I just found this website with links to download the RUU for the original firmware and all OTA up to date if anyone needs them.
Click to expand...
Click to collapse
Did you in japan and did you success with it?
Anyway, check your inbox. thanks !

Request advice from the experts on troubleshooting or install stock rom

Hi all,
Would like to thank you in advance in taking your time in reading this post. Its my first time (and post) with the XDA forums. I have a few questions I am not sure if Im doing the correct thing so Im hoping for advice for the experts here in the forum to point me in the right direction.
Technical skills - never flashed a phone before but reading the step by step instructions available in the forums.
A few information with my phone to help with troubleshooting
- Purchased with no warranty overseas because they dont sell it here in the Philippines
- Phone came with the following specs
- Android 8 with Nov 1, 2018 patch
- unlock bootloader
- software channel - retcn
- Build number - OPXS27.109-52-10
- Baseband version - M8988_20207.117.02.41-01.01R NCD
Issue:
1. 4G Network - not working at all on the local network. It seems to be able to go to 4G but cannot make outgoing or incoming phone calls/ text or mobile data.
- troubleshooted by resetting phone, changing apn with no luck. Changing it to 3G only seems to make the phone work to make voicecalls/text and mobile connection
2. Random apps crashing - namely - grab (like uber) and spotify.
- tried resetting the phone (and installed just grab app only after reset but still not working) and cleared partition cache boot mode but still no change.
Proposed solution
- installing a new stock rom - should fix the apps crashing issue and 4g issue
- installing custom rom like lineage (discarded this solution because it will disable audio mods) - i bought the moto mods JBL accessory.
questions:
1. Based on this thread - (https://forum.xda-developers.com/z2-force/how-to/how-to-return-to-stock-sprint-t3694783)
- I wish to install stock rom but Im not sure which rom to use. Do I use USC version based on the phones current build number? - OPXS27.109-52-10 or can I change to a different US carrier like verizon ?(related to next question)
2. Is there anyway to change/fix the carrier frequency so it will start accepting 4g locally here?
- will installing a stock rom with a different carrier (i.e. verizon), will that change baseband and accept other frequencies or will I brick my phone?
- Or hope the stock rom with a different patch will fix it? Ive read in forums it could just be the newer patches that giving me issues. The one available for USC is version OPXS27.109-40-7. Upon checking my local carrier and USC band frequencies, both have 5 band with 850ghz frequency available. So Im beginning to think it could be a software rather than carrier issue
3. Because the phone came with a unlocked bootloader, does that mean I will never receive OTA updates from the stock rom? I will have to manually update it when android 9 comes out?
4. software channel - retcn - does that have to do with anything with baseband or installing stock rom? Does this help in any trouble shooting? Ive seen a few threads in the forums with builds with specific software channel in other threads with specific models xt1789 - 02 or 03 or 06. I dont know if that affects stock roms?
-----------------------------------
Maybe it would also help to show my local 4g frequencies and band number
Smart Band is here below
Frequency Protocol Class Band Number
700MHz FDD-LTE/LTE-A 4G 28
850MHz FDD-LTE/LTE-A 4G 5
1800MHz FDD-LTE/LTE-A 4G 3
2100MHz FDD-LTE/LTE-A 4G 1
2300MHz TDD-LTE 4G 40
Sorry for some newb questions and I welcome any other methods of troubleshooting or suggestions you guys can give me. I feel installing stock rom USC carrier is the solution to the problem after all the research I have done, but would like confirmation first from the experts.
Regards
Rj

On mirror.lolinet.com, 109-52-10 belongs to Retail Apac. The newest rom was uploaded is 109-52-12.
If your unlocked bootloader phone is still running the stock firmware, it will be notified when OTA comes.
I'm using an ATT with carrier unlocked so everything is fine to me. With unlocked carrier, you can use any mobile network if the phone baseband supports.
According to basic theory, if the phone was unlocked bootloader, it can be flashed fw from other variants (but there will be problem for each variant situation). It seems none of us here has done this yet.
- Check your phone model, it's on the right of the charger port.
- Open Phone, and type: *#*#4636#*#*. Choose Phone info. Check the preferred network type. If you can receive sms but cannot send, just update your SMSC number.
Most problems can be solved by flashing the stock fw.
Good luck!!!

Thank you
I didn't even know that site until you pointed it out.
I would be definitely be using the APAC software and try and flash the stock rom. I hope it would work and if not I'll try and flashing the older patch version.
Thank you
Will update you hopefully in a week as soon as I fully understand the details of flashing.

Radioband Issue, RETCN and Stockrom app Fix
mr_5kool said:
On mirror.lolinet.com, 109-52-10 belongs to Retail Apac. The newest rom was uploaded is 109-52-12.
If your unlocked bootloader phone is still running the stock firmware, it will be notified when OTA comes.
I'm using an ATT with carrier unlocked so everything is fine to me. With unlocked carrier, you can use any mobile network if the phone baseband supports.
According to basic theory, if the phone was unlocked bootloader, it can be flashed fw from other variants (but there will be problem for each variant situation). It seems none of us here has done this yet.
- Check your phone model, it's on the right of the charger port.
- Open Phone, and type: *#*#4636#*#*. Choose Phone info. Check the preferred network type. If you can receive sms but cannot send, just update your SMSC number.
Most problems can be solved by flashing the stock fw.
Good luck!!!
Click to expand...
Click to collapse
Just giving people update incase anyone is interested. I decided to follow this guide Step E (reflashing back to stock). It worked perfectly for me.
https://forum.xda-developers.com/z2-force/how-to/guides-bootloader-twrp-custom-roms-root-t3805737
As you guys know the original Build number was OPXS27.109-52-10. It turns out that was meant for model XT1789-06. It wouldnt be a big deal except my model that arrived was for XT1789-05
Regardless I followed the instructions and installed the latest firmware for OPSC27.109-52-14 for XT1789-06 (https://mirrors.lolinet.com/firmware/moto/nash/official/RETAPAC/)
Installation went fine and all the apps crashing issues went away. However 4G still didnt work.
I decided to see if installation the latest build for XT1789-05 under the link below would help.
https://mirrors.lolinet.com/firmware/moto/nash/official/RETAIL/
It felt more stable, apps not crashing, moto mods still working, and I was able to get get 4G working for internet and sms however phonecalls (both outgoing and incoming) still didnt work. 3G seems to be still stable and working fine at the moment in the Philippines. (note: I have updated APN)
I have decided to leave it alone as I got half my problem sorted (apps crashing) and moto mods still working. Can live without 4G as its mostly connected to WIFI at home and occasionally going out. Crashing apps was more important win for me.
Maybe once Android 9 officially comes out for the phone, it may fix the issue.
I have explored the option of changing the radioband but I heard of nightmares for some users when they switched to USA. I dont know what will happen if I switch to Australia radioband. (i left it to automatic at this time).
Maybe if someone else found the solution, would be happy to try it out.

I'm sorry for you when you still have some problems. My friends mostly use Z2F form T-mobile and Sprint. ATT and Verizon are less. But they work well for all functions.
There's another way you can try. It's the method for dual sim. For eg, you've a Sprint one. You modded the hardware and the 2nd SIM slot is now available. But current Sprint fw only supports single SIM. You can download a dual sim fw, extract it and copy-replace the modem from Sprint fw to dual sim one (I dont remember exactly what modem should keep, sorry). Then, flash the combination fw and the phone runs with dual sim. You can try a stable system and retcn modem or vice versa.

mr_5kool said:
I'm sorry for you when you still have some problems. My friends mostly use Z2F form T-mobile and Sprint. ATT and Verizon are less. But they work well for all functions.
There's another way you can try. It's the method for dual sim. For eg, you've a Sprint one. You modded the hardware and the 2nd SIM slot is now available. But current Sprint fw only supports single SIM. You can download a dual sim fw, extract it and copy-replace the modem from Sprint fw to dual sim one (I dont remember exactly what modem should keep, sorry). Then, flash the combination fw and the phone runs with dual sim. You can try a stable system and retcn modem or vice versa.
Click to expand...
Click to collapse
Nothing to be sorry about, actually really grateful for your input.
Already had a big win by:
1. flashing for the first time ever to stock rom and not bricking my phone in the process
2. all apps are now working
3. moto mods are working
4. alternative solution to 4g issue is available
Just letting you know the my variant already is on dual sim, and I was pretty sure the modem was wiped and reinstalled when I reflashed back to stock. I did find another thread of similar issue. Only solution was really to either change to 3G or fix APN.
https://forums.lenovo.com/t5/Moto-Z...ing-Incoming-and-outgoing/td-p/4068998/page/2
One user commented it could be a carrier issue. (see below)
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07-13-2018 08:41 AM
Hello, guys.!
I've been following this inquiry very close and I've arrived into a very accurate conclusion:
1. This is not a device problem! Motorola devices are not the problem. I've found that Samsung and Huawei devices also have the same problems.
2. This is definitely about service provider network. In my investigation, AT&T is the one having this issue alone.
3. This issue happens only in certain Mexican areas. For example, in Monterey this happens. I went to Chihuahua and CD Juarez just last 3 days and I was able to use 4G and calls without problems.
4. Based on the idea that only happens in certain areas at certain networks, I can only concluded that happens to certain devices as well. Brands, perhaps, as unlocked iPhone does not present this issue.
------
It could be something to do with Volte 4G calls. It has been disabled for the Xforce 1789-05 european models.
I think waiting to Android 9 may be my best solution though I may start try to start troubleshooting and focusing on simcards to see if 4g will work with other carriers.

I've got an ATT Flipout. I could make call and sms normally. But the network could only rise to E+, cannot be up to 3G (several years ago). The problem was phone hardware. The baseband was only available for US.
Z2F was the flagship, so its modem supported many 4G band for other regions.
As you mentioned, I think you should find out what carrier's band would suit your Z2F. Luckily, all Z2F variants have our bands.
Good luck, guy! And hope you'll give us good news!

You have the (05) dual sim variant correct? You're also in the Philippines right? If you look at this link you'll see all the bands supported for your variant, also you can check carriers in your region to see what bands they are using.
If you look carriers in Philippines like Smart you can see what bands they use.
A comparable carrier is Claro in Brazil.
They use the same bands on a GSM network. I would assume that Retail firmware would open those bands, but I'm not 100% sure and maybe the firmware you flashed doesn't. I do see firmware for RETBR (retail Brazil) and I know that (05) variants are used there. So maybe flashing a retbr firmware will open the bands needed since Brazil and Philippines use some of the same bands. I'm not 100% sure on this, it's just my best guess. You're welcome to verify the info linked and do what you will. I'd think the worst case scenario would be borking your imei and having to blankflash, but those tools are around here as well and so long as you DO NOT relock your bootloader you'll find that it is pretty hard to actually brick this phone. That's the best I can come up with to help.

Thank you
41rw4lk said:
You have the (05) dual sim variant correct? You're also in the Philippines right? If you look at this link you'll see all the bands supported for your variant, also you can check carriers in your region to see what bands they are using.
If you look carriers in Philippines like Smart you can see what bands they use.
A comparable carrier is Claro in Brazil.
They use the same bands on a GSM network. I would assume that Retail firmware would open those bands, but I'm not 100% sure and maybe the firmware you flashed doesn't. I do see firmware for RETBR (retail Brazil) and I know that (05) variants are used there. So maybe flashing a retbr firmware will open the bands needed since Brazil and Philippines use some of the same bands. I'm not 100% sure on this, it's just my best guess. You're welcome to verify the info linked and do what you will. I'd think the worst case scenario would be borking your imei and having to blankflash, but those tools are around here as well and so long as you DO NOT relock your bootloader you'll find that it is pretty hard to actually brick this phone. That's the best I can come up with to help.
Click to expand...
Click to collapse
Your correct, its the dual sim 05 variant. I flashed the retail and I do get LTE data. It just the LTE wont work on 4G. So I dont think its purely a band issue because based on your link I have 3 supported LTE bands with the smart network. Its possible its something to do with carrier communicating with the phone. (APN? Volte?)
Question: will flashing a retbr on a retcn cause issue? Does software channel matter? Maybe I can give it a go, but my wife (who i gave the phone to) has been pretty happy with it. I dont think she wants another wipe on her phone. (i think i already reformatted at least 5 times already)

Update
I found this thread with moto z play.
Maybe this will work? It a method to open all baseband channels.
https://forum.xda-developers.com/moto-z-play/how-to/enabling-basebands-mzp-qualcomm-phone-t3684962

harkoliar said:
I found this thread with moto z play.
Maybe this will work? It a method to open all baseband channels.
https://forum.xda-developers.com/moto-z-play/how-to/enabling-basebands-mzp-qualcomm-phone-t3684962
Click to expand...
Click to collapse
I don't know about all that, looks like a recipe for trouble. Are you able to make or receive voice calls? FYI you can go to apn settings, click the 3-dot menu and reset to default. That should pull your apn info from your sim so you should be good to go apn wise.

There was an old method called RadioComm. It used to unlock carrier for Razr HD (and maybe others Motorola phones). But it is more danger than flashing fw.
On my Verizon phones, no APN profile was showed. But on ATT Z2F, APN was automatically set (and showed) for each carrier.

Inbound and outbound calls affected
41rw4lk said:
I don't know about all that, looks like a recipe for trouble. Are you able to make or receive voice calls? FYI you can go to apn settings, click the 3-dot menu and reset to default. That should pull your apn info from your sim so you should be good to go apn wise.
Click to expand...
Click to collapse
Unfortunately still a no go.
I have reset the network settings and used default apn as per your suggestion. I even copied settings from another phone using same carrier and used different calling apps. It's weird but when at 4g
1. Text work
2. Data works
3. Inbound and outbound phone calls doesn't work
Swap to 3g everything works
I'm still trying to convince my wife if I should flash to retbr.

harkoliar said:
Unfortunately still a no go.
I have reset the network settings and used default apn as per your suggestion. I even copied settings from another phone using same carrier and used different calling apps. It's weird but when at 4g
1. Text work
2. Data works
3. Inbound and outbound phone calls doesn't work
Swap to 3g everything works
I'm still trying to convince my wife if I should flash to retbr.
Click to expand...
Click to collapse
Well if everything works on 3g then it sounds like your bands are fine. Sounds more like a volte issue. 4g works, 3g works, calling works, it's just no calls when 4g is on. Are you using an old sim? Have you tried the sim in another phone to see if you experience the same problems with 4g? Some carriers use different sim for different services. What is your preferred network type set to? If it's exclusively LTE, try setting it to LTE/GSM. It sounds more like a sim issue, setting issue, or maybe a registration issue.

41rw4lk said:
Well if everything works on 3g then it sounds like your bands are fine. Sounds more like a volte issue. 4g works, 3g works, calling works, it's just no calls when 4g is on. Are you using an old sim? Have you tried the sim in another phone to see if you experience the same problems with 4g? Some carriers use different sim for different services. What is your preferred network type set to? If it's exclusively LTE, try setting it to LTE/GSM. It sounds more like a sim issue, setting issue, or maybe a registration issue.
Click to expand...
Click to collapse
I dont think its a old sim issue because its only a year old. But I am getting another simcard from another local network to test it out.
Will update with details.

Hello harkoliar, it looks like both you and I share the exact problem. And best of all, or worst depending on how you view it, I am in Malaysia with the same problems, Grab keeps crashing, among other apps just failing to work period.
Software Channel reads RETCN. 05 phone running an 06 firmware.
I noticed you tried to flash a RETAIL firmware, may I know which was the file you used, was it OPXS27.109-34-21?
I don't have much problems with the connectivity and using 4G. Perhaps it may be a difference between telcos in Malaysian and the Philippines.
Oh... And I bought mine from Lazada, where did you get yours. LOL

frozero said:
Hello harkoliar, it looks like both you and I share the exact problem. And best of all, or worst depending on how you view it, I am in Malaysia with the same problems, Grab keeps crashing, among other apps just failing to work period.
Software Channel reads RETCN. 05 phone running an 06 firmware.
I noticed you tried to flash a RETAIL firmware, may I know which was the file you used, was it OPXS27.109-34-21?
I don't have much problems with the connectivity and using 4G. Perhaps it may be a difference between telcos in Malaysian and the Philippines.
Oh... And I bought mine from Lazada, where did you get yours. LOL
Click to expand...
Click to collapse
Same Lazada. Lol. We must have gotten from the same supplier.
Your right, I installed OPXS27.109-34-21. Worked like a charm after that. Please follow the steps provided in the guide - Step E.
https://forum.xda-developers.com/z2-force/how-to/guides-bootloader-twrp-custom-roms-root-t3805737
note: be mindful just what version of android your using. Im assuming its also android 8 like mine. If its currently Android 7, i heard its best to install the android 7 rom first then upgrade to 8. You can tell by the versions.
Another user also having the same problems and reinstalled the latest Retail ROM for XT1789-05 - latest version, worked for him as well
https://forum.xda-developers.com/z2-force/help/internet-issue-apps-xt1789-05-t3924795/page2
Please let us know how you go.

harkoliar said:
Same Lazada. Lol. We must have gotten from the same supplier.
Your right, I installed OPXS27.109-34-21. Worked like a charm after that. Please follow the steps provided in the guide - Step E.
https://forum.xda-developers.com/z2-force/how-to/guides-bootloader-twrp-custom-roms-root-t3805737
note: be mindful just what version of android your using. Im assuming its also android 8 like mine. If its currently Android 7, i heard its best to install the android 7 rom first then upgrade to 8. You can tell by the versions.
Another user also having the same problems and reinstalled the latest Retail ROM for XT1789-05 - latest version, worked for him as well
https://forum.xda-developers.com/z2-force/help/internet-issue-apps-xt1789-05-t3924795/page2
Please let us know how you go.
Click to expand...
Click to collapse
Just finished flashing! So far so good, installing apps as we speak! Super excited!
Was your seller named Aukey? I left them a stinker of a review, lol.
Thank you so much for your experience and detailed breakdown of what you did to get right with your, now, wife's phone. :laugh::fingers-crossed::victory:

Different seller but same source most likely
Different seller but same source most likely.
Happy to help and hopefully that did fix all your app problems. :good:
Still credits and thanks to the actual guys who did the guide.

frozero said:
Just finished flashing! So far so good, installing apps as we speak! Super excited!
Was your seller named Aukey? I left them a stinker of a review, lol.
Thank you so much for your experience and detailed breakdown of what you did to get right with your, now, wife's phone. :laugh::fingers-crossed::victory:
Click to expand...
Click to collapse
AUKEY owns coolicool. Same supplier keeps making the same mistake

XT1922-7 Boost to Retail, is it possible?

Hi,
I have a XT1922-7 Boost version, it has been SIM unlocked by Sprint. Now, I no longer use Sprint.
I want to use the phone with T-Mobile or Verizon but there are a lot of bloatware & Sprint-custom settings which is very annoying . Right now, at least on T-mobile, it won't answer call on 4G/VoLTE, it drop to 3G on every call.
What is the best thing I can do? I suppose I can flash my phone to Retail?
I know my phone is Jeter. I might need to unlock my bootloader, flash TWRP, backup the existing Boost G6Play to a microsd card, but I do not seems to see any guide to go to retail, nor I see any Jeter rom to Retail.
Any advice? Thanks

enri1357 said:
Hi,
I have a XT1922-7 Boost version, it has been SIM unlocked by Sprint. Now, I no longer use Sprint.
I want to use the phone with T-Mobile or Verizon but there are a lot of bloatware & Sprint-custom settings which is very annoying . Right now, at least on T-mobile, it won't answer call on 4G/VoLTE, it drop to 3G on every call.
What is the best thing I can do? I suppose I can flash my phone to Retail?
I know my phone is Jeter. I might need to unlock my bootloader, flash TWRP, backup the existing Boost G6Play to a microsd card, but I do not seems to see any guide to go to retail, nor I see any Jeter rom to Retail.
Any advice? Thanks
Click to expand...
Click to collapse
Nope. Sprint Jeter is a different device. Not capable of VoLTE. It's not a retail device. Slightly different chip, different storage, different ram.

madbat99 said:
Nope. Sprint Jeter is a different device. Not capable of VoLTE. It's not a retail device. Slightly different chip, different storage, different ram.
Click to expand...
Click to collapse
I see. Thanks for replying
That means the best thing I can do is to disable all Sprint app...

enri1357 said:
I see. Thanks for replying
That means the best thing I can do is to disable all Sprint app...
Click to expand...
Click to collapse
Most of it is in /OEM

enri1357 said:
I see. Thanks for replying
That means the best thing I can do is to disable all Sprint app...
Click to expand...
Click to collapse
You can flash RETUS and it'll work. I've done it. Hell, I've even flashed the RETBR Aljeter firmware and that works too. I just can't get data without a gsm sim card. The bootloader and gpt.bin won't flash, but it shouldn't matter anyways. Just skip them.
Edit: RETUS Firmware.

Spaceminer said:
You can flash RETUS and it'll work. I've done it. Hell, I've even flashed the RETBR Aljeter firmware and that works too. I just can't get data without a gsm sim card. The bootloader and gpt.bin won't flash, but it shouldn't matter anyways. Just skip them.
Edit: RETUS Firmware.
Click to expand...
Click to collapse
On Jeter?

madbat99 said:
On Jeter?
Click to expand...
Click to collapse
Yep. xt1922-7 Virgin.

Spaceminer said:
Yep. xt1922-7 Virgin.
Click to expand...
Click to collapse
Nice. Retail firmware is for 32 GB device though isn't it? It still ran?
Looks like USC is the only one that got a pie full firmware... Weird

madbat99 said:
Nice. Retail firmware is for 32 GB device though isn't it? It still ran?
Looks like USC is the only one that got a pie full firmware... Weird
Click to expand...
Click to collapse
Yep, retail is for 32gb. I just grabbed the USC Pie firmware a little bit ago. I think that I can turn it into a flashable ROM. I'm trying to figure how to work the modems though. USC will be missing bands, so I'm just going to DD the partitions I need for Sprint/Boost/Virgin from the soak test. I think that'll make it work.

Spaceminer said:
Yep, retail is for 32gb. I just grabbed the USC Pie firmware a little bit ago. I think that I can turn it into a flashable ROM. I'm trying to figure how to work the modems though. USC will be missing bands, so I'm just going to DD the partitions I need for Sprint/Boost/Virgin from the soak test. I think that'll make it work.
Click to expand...
Click to collapse
It might work.
I can't believe the retail firmware flashed. That's crazy.

madbat99 said:
It might work.
I can't believe the retail firmware flashed. That's crazy.
Click to expand...
Click to collapse
I'd really like to know if it works for anyone else because I've never heard of it myself. Another thing that might also be related is, my phone came with a clear silicone case that had some numbers and MAN-S printed on it. I think it stands for manufacturer sample.

Spaceminer said:
I'd really like to know if it works for anyone else because I've never heard of it myself. Another thing that might also be related is, my phone came with a clear silicone case that had some numbers and MAN-S printed on it. I think it stands for manufacturer sample.
Click to expand...
Click to collapse
Mine definitely didn't come with a clear case. Odd indéed. I ordered mine from virgin Mobiles website.
Maybe you got a review unit?

madbat99 said:
Mine definitely didn't come with a clear case. Odd indéed. I ordered mine from virgin Mobiles website.
Maybe you got a review unit?
Click to expand...
Click to collapse
I'm think that's highly probable. There was an issue where a bunch people got Boost models inside generic white boxes, instead of Virgin in proper packaging.

Spaceminer said:
I'm think that's highly probable. There was an issue where a bunch people got Boost models inside generic white boxes, instead of Virgin in proper packaging.
Click to expand...
Click to collapse
I flashed the US Cellular pie update on my 1922-7 (which I had on Sprint and after my time with them was up they unlocked the SIM slot). It works no problem.
I used it with t-mobile for a week and everything seemed to work fine with it. It also works fine on ATT as well.
Right now it's got a t-mobile sim running Descendant Treble ROM - A only ARM GSI. Works like dream. I never tried VoLTE before I switched from T-Mobile and ATT doesn't offer it in my area.

kwiksi1ver said:
I flashed the US Cellular pie update on my 1922-7 (which I had one Sprint and they unlocked the SIM slot). It works no problem.
I used it with t-mobile for a week and everything seemed to work fine with it. It also works fine on ATT as well.
Right now it's got a t-mobile sim running Descendant Treble ROM - A only ARM GSI. Works like dream. I never tried VoLTE before I switched from T-Mobile and ATT doesn't offer it in my area.
Click to expand...
Click to collapse
Same here. I tried it a little while ago. I just can't update my profile or PRL on it, but LTE did work.

kwiksi1ver said:
I flashed the US Cellular pie update on my 1922-7 (which I had one Sprint and they unlocked the SIM slot). It works no problem.
I used it with t-mobile for a week and everything seemed to work fine with it. It also works fine on ATT as well.
Right now it's got a t-mobile sim running Descendant Treble ROM - A only ARM GSI. Works like dream. I never tried VoLTE before I switched from T-Mobile and ATT doesn't offer it in my area.
Click to expand...
Click to collapse
Hi, can you point me to the rom you have trried? thank you

kwiksi1ver said:
I flashed the US Cellular pie update on my 1922-7 (which I had one Sprint and they unlocked the SIM slot). It works no problem.
I used it with t-mobile for a week and everything seemed to work fine with it. It also works fine on ATT as well.
Right now it's got a t-mobile sim running Descendant Treble ROM - A only ARM GSI. Works like dream. I never tried VoLTE before I switched from T-Mobile and ATT doesn't offer it in my area.
Click to expand...
Click to collapse
I should ask virgin to unlock mine. Should be eligible by now. Who can remember dates.... Not me! I feel old today. 42, but most ppl think I'm closer to 32. But today I feel 52. LoL, sort of....

enri1357 said:
Hi, can you point me to the rom you have trried? thank you
Click to expand...
Click to collapse
https://forum.xda-developers.com/g6-play/development/roms-run-g6-play-gsi-t3904067
Update your device to PIE, unlock your bootloader, flash the newest TWRP build that works with PIE, download the A Only ARM build, unzip it, you should have a system img. Boot to fastboot, fastboot flash system system.img, boot to TWRP, flash this https://forum.xda-developers.com/android/software/universal-dm-verity-forceencrypt-t3817389. Boot the rom one time. Then boot back to TWRP and flash pico gapps for Pie. You'll have to get your device certified with google to get google apps to work.

kwiksi1ver said:
https://forum.xda-developers.com/g6-play/development/roms-run-g6-play-gsi-t3904067
Update your device to PIE...
Click to expand...
Click to collapse
Does this means flash this Jeter? https://forum.xda-developers.com/g6-play/development/ota-moto-g6-play-aljeter-t3921877
Thanks

enri1357 said:
Does this means flash this Jeter? https://forum.xda-developers.com/g6-play/development/ota-moto-g6-play-aljeter-t3921877
Thanks
Click to expand...
Click to collapse
Flash whatever version of Pie is out for your model. Your Model should be XT1922-? where the ? is a number. For example mine is XT1922-7. The retail US version is XT1922-9 etc
There should be a Pie update for whatever model you have. Flash the correct model and you should be good.

Question diffrence with rom's

Hi
i saw on on the post here few version for mu India ROM (op9 pro)
i just upgraded from the OXY UPDATE to OX12 le2121_11_c.39
and it doesn't look so stable, once awhile the phone close the screen and only wake after i tried to put your the sim or it just stuck for few seconds
i would like to download GlobalRom or EU rom
1.is it safe ?
2.will it erase all my data
3.can it be done ?

tulik23 said:
2.will it erase all my data
Click to expand...
Click to collapse
By default it will erase all data, but there may be a way to modify the installer.
You'd have to Google that trick though. I don't know it.
I would assume you can flash the other ROM just fine but you might have to change the modem?
That is what I had to do when I flashed Euro ROM on my USA T-Mobile phone.
Other than modem, everything else worked fine.

tulik23 said:
Hi
i saw on on the post here few version for mu India ROM (op9 pro)
i just upgraded from the OXY UPDATE to OX12 le2121_11_c.39
and it doesn't look so stable, once awhile the phone close the screen and only wake after i tried to put your the sim or it just stuck for few seconds
i would like to download GlobalRom or EU rom
1.is it safe ?
2.will it erase all my data
3.can it be done ?
Click to expand...
Click to collapse
First thing to learn when in a "development" world, make always backups. No matter what tutorials you follow, no matter what modifications you do, there is NEVER a guarantee it will all go smoothly, hence why you should be ready to backup your files before trying anything.

CZ Eddie said:
By default it will erase all data, but there may be a way to modify the installer.
You'd have to Google that trick though. I don't know it.
I would assume you can flash the other ROM just fine but you might have to change the modem?
That is what I had to do when I flashed Euro ROM on my USA T-Mobile phone.
Other than modem, everything else worked fine.
Click to expand...
Click to collapse
what u mean by change the modem ?

tulik23 said:
what u mean by change the modem ?
Click to expand...
Click to collapse
If your signal works fine, then don't worry about it.
If you can't access any cellular, then change to a modem that fits your region.