A2017U Modem problems - ZTE Axon 7 Questions & Answers

Okay here's the deal, I unlocked my phone and tried to flash a custom rom but after many failures to boot with a couple different roms i went back to stock using miflash. Everything was going fine until i noticed some interesting problems such as a couple cores on the processor would spike to %100 for no reason and with this would come an obvious "skip" in the rom, as well as the device not being able to detect my sim card and the IMEI info screen showed zeroes or unknown for everything. After just dealing with it for awhile i found the 8.0.0 beta edl file by turkeydevs and decided to flash it (note: the edit had said the us modem was included at the time but was changed soon after). Afterwards all was well except it woudn't connect to cellular, IMEI info showed up and my sim card was detected. I checked the post a week or 2 later after using my phone without the skip issue and saw that the edit was changed so i flashed the A2017U modem referenced in the post and the problem was back so i reflashed the included Chinese modem and it was fine again. i recently went back to stock(B35) again and the issue was back, so i tried flashing the chinese modem for the rom and it went away again. Has anyone ever encountered this before? And if so, how the hell do i fix it??????

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[Q] Serial Number changed flashing rom

Hello guys I need your help, Yesterday I was flashing MIUI ROM for my SM-N900W8 and it was not succesful, so I tried to restore the backup I did before flashing, but the problems started when TWRP did not allowed me to restore, it said Fail... after that I installed the Stock Rom from Odin and everything went ok until I was configuring the phone and when I was willing to connect to my wifi it appeared an error "Unfortunately Remote controls stopped" and the wifi turned to grey and I was not able to use it...
I flashed another stock rom (with operator) and the same issue, searching in the web I was a little deep about knowing what was happening and I realized my Serial Number changed, My IMEI is ok, but the problem persist. I need your help about this and restoring back again my phone. Thanks a lot
me too
just_one said:
Hello guys I need your help, Yesterday I was flashing MIUI ROM for my SM-N900W8 and it was not succesful, so I tried to restore the backup I did before flashing, but the problems started when TWRP did not allowed me to restore, it said Fail... after that I installed the Stock Rom from Odin and everything went ok until I was configuring the phone and when I was willing to connect to my wifi it appeared an error "Unfortunately Remote controls stopped" and the wifi turned to grey and I was not able to use it...
I flashed another stock rom (with operator) and the same issue, searching in the web I was a little deep about knowing what was happening and I realized my Serial Number changed, My IMEI is ok, but the problem persist. I need your help about this and restoring back again my phone. Thanks a lot
Click to expand...
Click to collapse
I think MIUI messed my phone up too!
My phone stopped radio function. WIFI works fine, but my network isnt being picked up at all. The SIM works though. It saves and deletes contacts properly, but has no signal.
I have been scouring the internet looking for radio images and RUU's. Tried the RUU for my HTC One S, it downgraded my radio hboot...everything to an earlier stock version. Still nothing works.
it changed my device serial number into chinese characters. my phone number is displayed correctly under phone identity.
Anyone have a soloution to this??
just_one said:
Hello guys I need your help, Yesterday I was flashing MIUI ROM for my SM-N900W8 and it was not succesful, so I tried to restore the backup I did before flashing, but the problems started when TWRP did not allowed me to restore, it said Fail... after that I installed the Stock Rom from Odin and everything went ok until I was configuring the phone and when I was willing to connect to my wifi it appeared an error "Unfortunately Remote controls stopped" and the wifi turned to grey and I was not able to use it...
I flashed another stock rom (with operator) and the same issue, searching in the web I was a little deep about knowing what was happening and I realized my Serial Number changed, My IMEI is ok, but the problem persist. I need your help about this and restoring back again my phone. Thanks a lot
Click to expand...
Click to collapse
In fact the S/N can easily be changed if your phone was rooted. But it is not relating to the wifi issue.
So you may have to try another firmware or another baseband.

N910F numerous issues in the last two weeks, should I give up and sell the phone?

Let me preface this with some quick info about the phone. I bought it two years ago and it was SIM locked to Vodafone, Vodafone basically told the guy selling it to me it'd take 6 weeks to unlock so to get around this I went to a third party phone shop who told me they unlocked it but it wasn't until later I realised they had actually changed the IMEI of the device to get it to work. This was okay though, the phone worked fine and didn't give any real issues until two weeks ago.
Two weeks ago my N910F on Kyubi Note 5 Port ROM began telling me "not registered on network" (couldn't make calls, texts or use 3G), I went through standard troubleshooting with my carrier and it didn't appear to be on their end (the SIM worked in a Galaxy S 3 I have spare). I decided to update to 6.0.1 stock from Sammobile using Odin to see if it solved the issue, unfortunately it didn't. I was advised by something I found online to check if the IMEI was blacklisted on Swappa- turned out it was. I brought it back to the shop who had originally changed the IMEI. The guy in the shop told me it wasn't blacklisted but the reason for no service was because the device had a sum of "none" where the serial number should be when you dial *#06#.
He "fixed" the devices by changing the IMEI again and reverting to 4.4.4. He told me not to update it and everything would be fine. Obviously I wasn't too happy with being stuck on KitKat so he told me if I need to come back within 2 weeks after breaking it again that he'll fix it for free. Now the phone on 4.4.4 was giving a serial number and everything appeared fine.
I flashed 6.0.1 onto it and again the S/N became "none", but everything still more or less worked despite this. Since then I have Rooted it, flashed TWRP and installed Xposed. Once I installed Xposed problems began to arise again, the phone is reporting the SD card as corrupted repeatedly, everytime the phone turns on, once finished booting I will get a black screen with just a navigation bar and an empty battery icon (then after 2-3 mins it's fine), 3G wouldn't work at all, wifi passwords aren't being remembered, following boot I get the error message "process system is not responding would you like to close it".
Thankfully I made a backup in TWRP before putting Xposed on the device and restored the system to that this morning, which fixed the 3G issue but all of the other problems are still there (despite not having been there before Xposed was installed).
What should I try now? Should I go back to the guy again? Should I try revert to stock 4.4.4 or 5.1.1 through Odin? I'm really tempted to just cut my losses and sell it, but I love the phone so much. Any help is massively appreciated.
piratezilla said:
Let me preface this with some quick info about the phone. I bought it two years ago and it was SIM locked to Vodafone, Vodafone basically told the guy selling it to me it'd take 6 weeks to unlock so to get around this I went to a third party phone shop who told me they unlocked it but it wasn't until later I realised they had actually changed the IMEI of the device to get it to work. This was okay though, the phone worked fine and didn't give any real issues until two weeks ago.
Two weeks ago my N910F on Kyubi Note 5 Port ROM began telling me "not registered on network" (couldn't make calls, texts or use 3G), I went through standard troubleshooting with my carrier and it didn't appear to be on their end (the SIM worked in a Galaxy S 3 I have spare). I decided to update to 6.0.1 stock from Sammobile using Odin to see if it solved the issue, unfortunately it didn't. I was advised by something I found online to check if the IMEI was blacklisted on Swappa- turned out it was. I brought it back to the shop who had originally changed the IMEI. The guy in the shop told me it wasn't blacklisted but the reason for no service was because the device had a sum of "none" where the serial number should be when you dial *#06#.
He "fixed" the devices by changing the IMEI again and reverting to 4.4.4. He told me not to update it and everything would be fine. Obviously I wasn't too happy with being stuck on KitKat so he told me if I need to come back within 2 weeks after breaking it again that he'll fix it for free. Now the phone on 4.4.4 was giving a serial number and everything appeared fine.
I flashed 6.0.1 onto it and again the S/N became "none", but everything still more or less worked despite this. Since then I have Rooted it, flashed TWRP and installed Xposed. Once I installed Xposed problems began to arise again, the phone is reporting the SD card as corrupted repeatedly, everytime the phone turns on, once finished booting I will get a black screen with just a navigation bar and an empty battery icon (then after 2-3 mins it's fine), 3G wouldn't work at all, wifi passwords aren't being remembered, following boot I get the error message "process system is not responding would you like to close it".
Thankfully I made a backup in TWRP before putting Xposed on the device and restored the system to that this morning, which fixed the 3G issue but all of the other problems are still there (despite not having been there before Xposed was installed).
What should I try now? Should I go back to the guy again? Should I try revert to stock 4.4.4 or 5.1.1 through Odin? I'm really tempted to just cut my losses and sell it, but I love the phone so much. Any help is massively appreciated.
Click to expand...
Click to collapse
Changing the IMEI is illegal in most countries and therefore the discussion thereof is prohibited on XDA.
Thread closed.

No Service with Sim Card Inserted

A few days I woke up with no service on the Nexus 6p. This was a few days after updating to the latest oreo build. Sim card seems detected because when I take it out another message shows up "No SIM card - No service", and when I put it back it only shows "No service". Tried putting the card in a Nexus 5X and it works fine.
Tried the following with nothing working so far:
- Switching 2G/3G/LTE and rebooting in between.
- *#*#4636#*#* and turning off the radio, switching between the different options of GSM/LTE/etc...
- Restoring a working nandroid backup
- Reflashing different ROMs
- Factory reset
- Factory reset then flashing ROMs
- Wiping cache and dalvik
- efs fix in twrp
Hardware version ANGLER-VN2
IMEI shows up under IMEI information tab but not under SIM Status tab, there it shows not available.
I live in Ontario Canada, carrier is Freedom mobile.
So now I'm stuck, tried calling google and hwawei and they won't do an RMA because my warranty is expired.
Anyone has any ideas to try?
Thanks in advance.
Not that this is going to help, but this has GOT to be an Oreo issue, myself as well as at least 4 others that I have seen has been getting the No service, or No Sim, mine did the No Sim, then started bootlooping.
---------- Post added at 07:36 AM ---------- Previous post was at 07:06 AM ----------
https://www.theandroidsoul.com/fix-...d-wifibluetooth-issues-restoring-twrp-backup/
No this has nothing to do with O.
Which version phone do you have? H1511 or H1512?
What country are you in now?
What is your carrier? If MVNO state that.
Are your IMEI and phone numbers showing up in settings?
Everyone, please put the most basic information in your profile like where you live, which carrier you are currently on, and maybe even which variant of your phone.
I updated the first post with more info. How do I tell if I have H1511 or H1512? I bought it from the google store in Canada.
More information is good. Please update your XDA profile so the next person trying to help can check there first. You can find the device variant by booting to bootloader (not recovery) and using the vol toggle to navigate to "Barcodes". IMEI should show up there too. Date of manufacture, Serial #, etc. I think you should have started a normal thead, not Q/A, BUT your IMEI and a lot of other information should be showing up under SIM info. That's a problem. Second, you say you did the EFS fix in TWRP. Can you explain how you did this? Did you use one of YOUR OWN TWRP backups which contained the modemst1,modemst2 and restored ONLY those two partitions to your device? Did you receive any confirmation or error? Have you tried using a SIM from a Rogers or Telus in your phone to see if the SIM info shows up?
Thanks for the help, I'll update my profile with this info as well.
in the bootloader the IMEI shows up along with the rest of the info. It's a H1511 device.
The EFS fix is by following this: https://www.theandroidsoul.com/fix-empty-imei-corrupted-efs-no-sim-unknown-baseband-wifibluetooth-issues-restoring-twrp-backup/
is modemst1 and 2 contained in the twrp backup? and if so how do I restore it? in restore options there's system, data, vendor and boot only. I guess it's an option in the backup that I haven't selected?
I tried another SIM also from freedom and it didn't work. I don't have a Rogers or other SIM to try currently.
Right, so if you didn't ever select the EFS partitions when using TWRP Backup, you never backed them up so under Restore they don't show up (so you can't use that method). You can however use TWRP terminal or fastboot to wipe those and reboot. I would be sure to try at least one SIM from either Rogers or Telus. If that doesn't work, then wipe the EFS partitions and let them rebuild (hopefully).
Definitely Oreo issue. Google messed with something and it broke data for many people. I have been troubleshooting this for the last week (Verizon, US, fully stock 6P) and finally found a thread where a Google rep acknowledged the problem and said it was high priority for a fix.
I wish you luck with that one @LucJoe. This has been happening for the past 2 years from MM, N, and now O...and XDA is full of threads (just look). So you just go ahead and wait for Google to fix it for you, LOL. - Not a new issue related to O.
Never happened to me before updating. The data issues manifest differently across different carriers but for some reason Oreo likes to play it safe and disconnect data. I have not been able to get LTE for more than a couple seconds, but will get slow unstable 3G occasionally. Google confirmed the issue here: https://productforums.google.com/forum/#!msg/phone-by-google/kw3ZcXd1BVs/7HYuANdoAgAJ
A recent success using terminal from TWRP (or the OS if you are rooted). You can also use fastboot to do the same thing using the commands in the article posted in this Q/A (method 2). Good luck! See thread here.
This seems like it's a different issue described in that thread. I'm not running out of data, there's no service and no connection of at all to any network.
I did find that and try it before posting here. It did nothing to fix the problem. It did say that something was copied over '4 MB copied, at 14.3 MB/s' something like that but nothing changed.
I also have the same issue. Have tried everything including going back to stock 7.1.2 & locking the bootloader. Nothing seems to work. Interestingly, when i pull up the hidden phone diagnostic menu, it shows all cell measurement info which means that the antenna is receiving signals but the phone somehow is not registered on the network?
I can wipe those partitions with fastboot but is it safe? I have never used TWRP and my problems started after updating to Oreo. Is there a chance the official OTA could corrupt those partitions?
@LucJoe- That fix is not for you. That is for users who have no IMEI or phone number under About Phone>>SIM info. Your issue (as I understand it) is a weak and intermittent signal that keeps disconnecting LTE and sounds like a carrier or SIM issue. Why not go get a new SIM provisioned for your phone. That or pop somebody else's SIM in your phone and see if you get a different outcome.
Yes that was my first thought as well. I got a new SIM, then another one. So 3 SIMs now with the same result. I've been on the phone with so many techs from Verizon/Total Wireless and none of them have any answers. If I put the same SIMs into a Moto E4 I picked up for testing, it works fine. But the 6P immediately disconnects from LTE then bounces between 3G/1X.
My next test is to try a SIM from a different network I guess... maybe Verizon is blocking my 6P. Or maybe my LTE radio is damaged somehow.
So I did this using TWRP but wasn't sure if it actually went through or not. I did it now through adb from pc and also fastboot and it says permission denied. Any idea how to bypass that?

No network access (Moto G5 Plus)

Hi everyone,
I've been having a problem since yesterday morning. Everything seemed to be fine with my phone before I flashed a custom rom. I was using at the moment MSM Xtended and I flashed the latest version of CrDroid. After flashing that other custom rom and booting, my phone had no network signal. All it reads on the status bar after that is just "No service". Of course, I removed the SIM card and reinserted it many times but that did nothing.
I've already tried flashing another rom (the latest AICP rom) and even going back to the one I was using at the beginning, but still nothing. I even tried reflashing the NON-HLOS.bin file and erasing modemst1 and modemst2, but it didn't do anything either. I also tried flashing this deodexed stock rom and booting. Interestingly, that kind of fixed the problem, since it recovered its network functionality. However, after reflashing an Oreo custom rom, it loses it again (actually, I've done that a few times today, but the last time I tried flashing the stock rom, for some reason it didn't fix it anymore). I don't know if in this case it's worth mentioning it, but I've tried checking my IMEI on both, custom roms and stock rom, and it's never been 0 at any moment.
TL;DR: My phone lost its network signal after flashing a new custom rom and I have no idea why. If anyone could somehow help me, I'd be really, really grateful.
I have had this happen so many times it is not crazy LOL. The best you can do is find a rom that it happens the least. For me it has been AOSP extended. Signal has been great. It is a bug that I dont think the devs even thought would happen with 8.1 roms. It will happen to everyone at some point if we stay on these 8.1 roms i guess until we get a workable 8.1 stock rom. There will be those who chime in saying it nevver happen to them but it will eventually.
Well, it's nice to know I'm not actually the only one then, I guess. But is there nothing I can do? Since I can't seem to get it fixed even by flashing the stock ROM anymore and flashing AOSP extended didn't seem to help at all either
I know brother there is no rhyme or reason it just happens. I am hoping when 8.1 stock comes out for us there will be a new batch of 8.1 custom roms without this problem. Right now i am on extended and havent had any signal problems for a few weeks so who knows.
Maximo22 said:
Well, it's nice to know I'm not actually the only one then, I guess. But is there nothing I can do? Since I can't seem to get it fixed even by flashing the stock ROM anymore and flashing AOSP extended didn't seem to help at all either
Click to expand...
Click to collapse
Okay. Luckily enough, Oreo stock ROM doesn't look like it's gonna take too much more to arrive... Or so I hope, at least. Thanks
I was using LinageOs and it was working great. Then I decided to install DolbyAtmos and for that I flashed Magisk . Suddenly i had no network but my sim cards were detected , IMEI was there but no network on either sim whatsoever. I tried reflashing the LinageOs and PixelExperience ROM but none worked. So I tried flashing(ADB) the stock firmware only to lose my IMEI . After reading this post I tried Debloated ROM and my network was back. I should have stopped at that point but I tried to return back to stock again and lost IMEI again and now I have tried Dbloated,LineageOs , PixelExperience , AOSP Extended , but none helped me getting back network . Now I am stuck with this phone with no network , I had a backupp of my system before I flashed Oreo ROMs (with EFS) so I can get IMEI back but no network. This phone was my daily driver and now I have no idea what to do.
svapre said:
I was using LinageOs and it was working great. Then I decided to install DolbyAtmos and for that I flashed Magisk . Suddenly i had no network but my sim cards were detected , IMEI was there but no network on either sim whatsoever. I tried reflashing the LinageOs and PixelExperience ROM but none worked. So I tried flashing(ADB) the stock firmware only to lose my IMEI . After reading this post I tried Debloated ROM and my network was back. I should have stopped at that point but I tried to return back to stock again and lost IMEI again and now I have tried Dbloated,LineageOs , PixelExperience , AOSP Extended , but none helped me getting back network . Now I am stuck with this phone with no network , I had a backupp of my system before I flashed Oreo ROMs (with EFS) so I can get IMEI back but no network. This phone was my daily driver and now I have no idea what to do.
Click to expand...
Click to collapse
Everything you said is exactly as if I had written it. I did all of that and now I'm exactly in the same position. No idea how to fix it yet. Still, if you managed to find a solution somehow, please write a reply on this thread again
Maximo22 said:
Everything you said is exactly as if I had written it. I did all of that and now I'm exactly in the same position. No idea how to fix it yet. Still, if you managed to find a solution somehow, please write a reply on this thread again
Click to expand...
Click to collapse
No success yet , but read on some posts that different baseband could be an issue.
Solution I've tried and worked 100 %
Hi bodies,
You can turn off your phone,
Go to fastboot menu by pressing and holding power button and volume down button in the same time.
Roll to "Restart Bootloader" with volume up/down and validate with power button.
Now select start and the network is back.
see you !:fingers-crossed:
Hello everyone I am facing signal problem with my moto5G plus device .it detect sim card but not getting signal . While searching manually it's say's error while searching network. When i checked in QCQM app for sim card test it's shows " PHONE ICCID Compare with SIM ICCID: ERR". Can anyone give me the solution .. I have tried to boot device in bp tools mode it worked for me only ones until next reboot after that nothing is happening even bp tools mode also ... Had done restore factory many times but same result with no signal
Hi, i did a clean flash and installed android 11 from android 8.1 on my Moto g5 plus(XT1686), after flashing rom with android 11 i am not getting and network coverage, it detect the sim card but no network, cant even search network manually shows as Not available. But after i recover and come back to 8.1 network works fine. Only after updating to any android 11 it dont work. I tried network reset and even Bootloader but nothing seems to work.
Does any1 knows any fix for this?
Does gapps can effect the Network?

[SOLVED] IMEI and baseband unknown - unrooted device

Hi all,
My SM-G935F is not rooted and it has been bought network unlocked.
Yesterday I was browsing normally in 4G, the device became very slow and suddenly a message popped up "please insert SIM card". I have done the normal procedures of restarting and wiping cache partition which did not solve the problem.
In the meantime, I have tried the SIM on another device and it has worked properly.
I've noticed that the fields IMEI and IMEI DV are displayed as "Unknown".
I have searched for solutions but, because my phone is not rooted I'm not sure whether it applies to my case. Please note that I've made no change that could cause this issue, it has simply happened.
What could be causing this?
Try to reinstall the stock via odin. Maybe that will solve your problem. If not, it may be a hardware problem.
Dark Stranger said:
Try to reinstall the stock via odin. Maybe that will solve your problem. If not, it may be a hardware problem.
Click to expand...
Click to collapse
Thanks. I have installed latest firmware via ODIN successfully. However it did not solve the problem.
Baseband is also displayed as unknown.
If it is an hardware issue,is it repairable?
BLZ83 said:
Thanks. I have installed latest firmware via ODIN successfully. However it did not solve the problem.
Baseband is also displayed as unknown.
If it is an hardware issue,is it repairable?
Click to expand...
Click to collapse
99% of the time, its a mobo replacement for this issue if it ends up being hardware related, and if a mobo replacement doesnt fix your issue, not much else will. Might as well strap it to a missile if a mobo swap doesnt fix it
SOLVED
Right, the problem has been solved for now.
I have taken multiple steps which have got me confused TBH, but I will try to recall them in detail:
(please note that before these steps I have attempted to flash latest firmware G935FXXS7ETA4 at least 3 times without CSC home before rooting)
1. I have rooted with CF Auto Root hero2lte
2. I have copied EFS, radio and nv_data.bin to a safe location in my PC.
3. Used latest TWRP flash.
4. Flashed latest firmware G935FXXS7ETA4 with Home CSC and that did not work.
5. Flashed latest firmware G935FXXS7ETA4 CSC only and after restarting a message popped up informing that the single SIM mode had been switched to DUAL SIM mode, and network signal was back on.
6. I have installed the app "phone info" which now indicates baseband version and original IMEI. Happy days!
Notes:
On the phone info app I get the following information displayed
Device Type:
hero2lite
Product Name:
hero2ltexx
Is it possible to change this back to the original name?
UPDATE
UPDATE
- Sometimes it switches from 4G to 3G ("E" symbol). 4G comes back on if I restart on safe mode.
- It disconnects from the network randomly, then it comes back on.
- Everything else works perfectly fine.
This is clearly an intermittent issue, could it be the modem hardware failing?

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