No Mobile Data 3G/4G (only 2G) - ZTE Axon 7 Questions & Answers

I have an A2017G for about a year and a half, I noticed that 2G / 3G networks never worked. IMEIs are normal but do not go up the network, Asderdd helped me once using QPST + QFil and we even managed to make only 3G work, however after I used the Battery Guru app the network went down. Would anyone know if it's a hardware problem or a bug?

2 possibilities with software that are common.
a) You need to ensure the APN is correct for your carrier.
b) The phone could be running the wrong ROM making the modem software incompatible. There are three versions of the Axon 7.
Could have a hardware issue but I think it will be software.

RobboW said:
2 possibilities with software that are common.
a) You need to ensure the APN is correct for your carrier.
b) The phone could be running the wrong ROM making the modem software incompatible. There are three versions of the Axon 7.
Could have a hardware issue but I think it will be software.
Click to expand...
Click to collapse
Probably a hardware problem, because I already installed the stock 6.0, 7.1 and 8.0, Custom ROM 8.1 and 9.0 and the problem persists!

Related

[Q] What if I can't connect to a specific cellular network provoider (yesss! AUT)?

Hello all,
I want to understand in a more detail how android is working because I have a specific problem with the cellular network.
On my galaxy s4 i9505 I was running a CM11 Snapshot M9 for a while without a problem.
It's ok but I often wanted to update to the latest CM11 builds (Snapshot or Nightlys) but there seems to be a problem with my cellular network.
The thing is, my provider is "yesss!" which is a discount mobile provider in Austria. With the M9 build the correct network is found and automatically connected. On all newer variants there is no automatical connection.
When I search for cellular network providers I only find the bigger ones like "A1", "Drei", "T-Mobile", ...
I can connect manually to "A1" which is a roaming partner of "yesss!" but it won't reconnect automatically and it is detected as roaming (which is correct). So basically the modem is working but there is no cance to find a connection to "yesss!"
How does it work?
I found out that even on the newer builds, the same modem is used.
I tried: I9505_XXUDMGG_MODEM.tar and later I9505_XXUDMHI1_MODEM.tar
both work with CM11 Snapshot M9 but are not working with newer builds.
So it may seems to be no problem of the modem?!
I tried to go to the "*#*#4636#*#*" menu and checked the settings:
on both versions "LTE/GSM auto (PRL)" is configured, so also no difference.
I tried some inofficial CM12 builds and other Andorid 5.0 builds.
Allways the same... The roms are working fine but the can't connect to "yesss!". only "A1" is possible.
Does anybody know what I could do?
Please help. Right now it seems that I am stuck at an old CM11 build.

N9108V - Note 4 for China Mobile version. 3G and LTE not working in Europe (Greece)

Hello everyone,
A Note 4 N9108V end up to my hands, but after using it i realised it cannot properly operate in my network.
It is a snapdragon variant, single-sim version for China Mobile, has lot of Chinese stuff totally useless if you are outside China and does not have Google apps also.
I manage to root the device, install custom CWM recovery, install a MIUI7 ROM that is quite good, install Google but still have problem with 3G coverage (and LTE ofcourse since in China LTE is different than EU)
I have 3G coverage, but if i will move to another location i will not be able to make calls, and i will also appear as unreachable if someone is calling me. Also data connection will not work. Later, it may work correctly for a while.
In GSM mode is working perfectly
I took it to a local repair center to check for hardware problem, they say that it is probably the baseband (modem) software that is designed specific for the China Mobile network, or there is a bug.
I tried all the available official ROMs and modems for this device (4.4.4, 5.0.1, 5.1.1) but nothing improved.
The only thing i manage to do is to have this amazing phone working only in GSM mode....
It is like having a Ferrari with pedals.
I am thinking if it is somehow possible to load the modem file for the EU model (N910F), and this may "unlock" the needed frequencies to operate correctly. Or even, if it possible to load the entire N910F or similar non-branded Note 4 formware to the phone, since i suppose the hardware is the same.
I tried to load this modem file and the n910F firmware with Odin but is not accepted, the procedure failed.
Any ideas, proposals etc?? (except of hammering the device, this will be my last option) :laugh:
Thanks in advance

WiFi connections problems - baseband?

Hello,
since I installed Nougat to my G4 Plus, first stock, then lineageos 14.1, I have problems with the wifi connections... every know and then, it just disconnects. I observed this behavior at many wifis, not just mine at home.
Does someone else have this problem? Which baseband are you using? Are you using dual SIM?
I got the baseband M8952_70030.25.03.62R.
Thanks for your help!
Mehrsau said:
Hello,
since I installed Nougat to my G4 Plus, first stock, then lineageos 14.1, I have problems with the wifi connections... every know and then, it just disconnects. I observed this behavior at many wifis, not just mine at home.
Does someone else have this problem? Which baseband are you using? Are you using dual SIM?
I got the baseband M8952_70030.25.03.62R.
Thanks for your help!
Click to expand...
Click to collapse
I'll concur with this. On both 2.4 and 5GHz as well as over 4G, my connection will drop every so often.
Nothing life-changing, but somewhat annoying. I'm on the Nougat RETUS radio.
negusp said:
I'll concur with this. On both 2.4 and 5GHz as well as over 4G, my connection will drop every so often.
Nothing life-changing, but somewhat annoying. I'm on the Nougat RETUS radio.
Click to expand...
Click to collapse
I'm not alone. Fine. Which baseband version are you running on?
Mehrsau said:
I'm not alone. Fine. Which baseband version are you running on?
Click to expand...
Click to collapse
Same as yours; 70030.25.03.62R
I also have the same issue since the official Nougat update. Any ideas as to what it could be. Very annoying.
I have the same issue, it's very random and sometimes the wifi will not re-connect, I must manually connect to re-establish it. I have attempted to discover what if anything I am doing which may be causing it to occur with no real answers. I find it more than mildly annoying as it results in my connection timing out. Sometimes I may go hours without an incident, other times it is perpetual and constant. I believe that it may be caused by faulty hardware or firmware for the wifi radio as I have been incapable of discovering any evidence to suggest that this is widespread enough to be related to Nougat. That being said I did not have this problem until completing the official update on my phone which was completely stock at the time it was initially completed. My only course of action at this point is to A. rely on someone far more intelligent with this device to fix it. B. replace it with a different device
Same here. Very annoying when using VOIP etc. I tried both M and N basebands and different roms/kernels.
The problem might be due to the router settings.
Try to update firmware of check your wifi channel.
Wifi connectivity problem after ROM upgrade: baseband VS Llineage VS stock ROM
I flashed the newest clean stock firmware NPJS25.93-14-18 on XT1625
baseband M8952_70030.25.03.62.02R Athene_RetUSA
Then I flashed Llineage-14.1-20180815 and observed problems with Wifi, mostly with old WEP protocol.
Then I downgraded to stock ROM NPJS25.93-14-7-8
baseband M8952_70030.25.03.64.01R Athene_RetUSA.
Wifi connection seemed to be OK on stock NPJS25.93-14-7-8.
So is the wifi problem resolved with baseband M8952_70030.25.03.64.01R?
Not exactly so. After I flashed Llineage-14.1-20180815 with GApps (nano) , the wifi problem re-appeared despite having "good" M8952_70030.25.03.64.01R
So baseband is the same, but Andoid 7.0 stock ROM handles wifi better than the latest Lineage. Or is Google apps and software is involved?
The problem was discussed on Motorola forum
The problems seem not to be limited to Moto G4 only, but clearly appeared after upgrading to newer firmware. It might have something to do with tightening security in resent Android and Google firmware as Wifi WEP protocol considered outdated and of low security . However, some people reported problems with Wifi WPA protocol, too

Newest baseband/radio firmware for XT1575?

I am troubleshooting some minor data connectivity issues on 7.x while using Sprint (att/tmo/vz unaffected). Issue is a long hesitation when reconnecting to cell data even when there is perfect signal for voice/text, might be something to do with the SprintDM subsystem or APN settings, maybe roaming settings or the eHRPD-LTE handoff, trying to figure that out!
But I wanted to see if there is any official (or working modified) version newer than M8992_1255331.29.01.88.02R SUPER NA ?
Obviously a North American radio firmware. Thanks in Advance.
another thing....I have some good insight on how to potentially fix this problem but I do not know how to dump/decompile the radio firmware to look at it and make adjustments. I could use some suggestions on software for this? I used QPST plenty in the past but since LTE came out this is a whole new level for me.
adrenatek said:
I am troubleshooting some minor data connectivity issues on 7.x while using Sprint (att/tmo/vz unaffected). Issue is a long hesitation when reconnecting to cell data even when there is perfect signal for voice/text, might be something to do with the SprintDM subsystem or APN settings, maybe roaming settings or the eHRPD-LTE handoff, trying to figure that out!
But I wanted to see if there is any official (or working modified) version newer than M8992_1255331.29.01.88.02R SUPER NA ?
Obviously a North American radio firmware. Thanks in Advance.
Click to expand...
Click to collapse
You have the newest radios until the Nougat update releases.
I would love to know too, I've been having so much connection issues it's ridiculous.
adrenatek said:
another thing....I have some good insight on how to potentially fix this problem but I do not know how to dump/decompile the radio firmware to look at it and make adjustments. I could use some suggestions on software for this? I used QPST plenty in the past but since LTE came out this is a whole new level for me.
Click to expand...
Click to collapse
To my knowledge, you can't extract the radios in the device... you can get the NON-HLOS.bin and fsg.mbn files from the current factory images (possibly the OTA's as well, but I haven't looked into them, often times they are no complete images but binary difference images)... the "modem" in modern Moto devices is in 2 pieces, NON-HLOS contains most of the LTE, GSM, and WiFi "modem" while a critical piece is in fsg.mbn, unfortunately there isn't much documentation on what these pieces are and how to edit them. QPST changes on modern devices are much more problematic than older ones.
This is troubling. I wonder if my noticing of this issue on Sprint is only because Sprint's network is more 'cobbled together' in terms of radio frequencies and technologies. Definitely no issue in any 6.x ROM, but 7.x has delays in bringing back data connectivity after certain network changes. I am not even certain it's the modem files causing this, but perhaps something to do with APN settings and how they are auto-selected in 6.x versus 7.x. At any rate, this is a very annoying issue that I am disappointed in Motorola for not addressing, or at least releasing a developer bulletin on how to troubleshoot. Makes me pretty certain I'm gonna go to some other company for my next device unless they come out with an update.
There has to be a solution to this. It could even be related to the DMservice/SprintDM/etc apk files that control provisioning and not the modem itself. Although only a guess, I am fairly certain this is why they have not released an official 7.x OTA. How deep can I really go with this without permanently bricking my device's modem? I can probably restore the IMEI if I need to, but my thoughts have been: find these "dm-service apk files" from a 7.x device and use them on the XT1575, flash a modem from a 7.x Moto device or another device that uses the same SoC and runs 7.x, or find another component in Android that puts the 6.x radio functionality into 7.x without back-dating the entire kernel or something. There will probably come a point soon enough where I won't care about bricking my phone in the name of solving this, but I could use all the info I can. Nothing out there like QPST or a qualcomm modem binary editor that works for LTE devices?
Can somebody point me to a thread that contains, or upload a copy of these files from a 7.x Motorola device:
-any/all system APK's that contain the word: "omadm" in the process name (examples are SprintDM, Carrier Provisioning Service, DMService, etc)
Something I thought might be worth pointing out.
(omitted out, I was wrong about this)
Still troubleshooting this issue....

Only EDGE available since a couple of weeks

Hey, guys.
I'm currently working on a friend's Nexus 6P and trying to gather some information I may have missed.
Troubleshooting:
Since a few weeks it's not possible to connect to UMTS, HSDPA or LTE (T-mobile). In addition the connection to GSM is pretty unstable.
What I've done so far:
- Factory Reset (problem persisted)
- Unlocked bootloader and flashed custom ROM (Firehound) (problem persisted)
-flashed various vendors and radios (at this point I was able to get a stable GSM connection without "only emergency calls" but still nothing but EDGE is available)
- changed frequencies, preferred network and so on
- placed the SIM in my OnePlus 5 - works flawlessly
- deleted APNs and set it up manually
- changed settings in security to none and rebooted - nothing happened (I read this was a bug in Oreo, so I gave it a try)
I'm pretty frustrated right now. This phone is really annoying. It had a hardware defect just before the warranty was gone (eMMC chip) and please... It can't be another hardware defect right now...
I'm looking forward to any kind of (software) help and hints, I would really appreciate that!
Thanks in advance.
Try using old marshmallow stock rom. It works fine with that version. I also had the same problem with latter versions
manish1ly said:
Try using old marshmallow stock rom. It works fine with that version. I also had the same problem with latter versions
Click to expand...
Click to collapse
Thanks a lot for your suggestion!
Can you recommend any ROM to me?
Never mind... I didn't read "stock" I'll try, thank you!
Okay, so I flashed a factory image (the earliest one from Google, 6.0) and still there's only EDGE available.
Guess it's a hardware defect again.
Shame on such an expensive device. Congrats to you, Google and Huawei

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