No mobile data on custom roms - Xiaomi Mi 8 Questions & Answers

Hi.
I can't get mobile data to work on custom roms.
I clean flashed Havoc, pixelexpirience and ZenX on top of xiaomi.eu. On all of them same problem, no mobile data. Phone can see my carrier name, I can call and text. Under the quick tile to turn on/off data I can see 4G icon. I'm currently on ZenX.
I tried reflashing rom, flashing xiaomi.eu and custom again (it's all fine on MIUI), wiping ALL data, restoring defoult APN, adding my operator APN manually.
Nothing helped. Am I missing something? Is there some zip to fix it? Tried looking for solution but no success.
I'm desperately looking for any ideas and fixes.

What Network operator do you use?

Related

No data connection after flashing rom

Hello, i flash 2 roms in total, 1st one was blazingdragon 1.9 and i lost my data connection after flashing it. so then i decided to flash CM7 and i got the same issue... no data connection. i am with FIDO and wen i turn on my data roaming, i connect to data, but when i disable roaming it doesnt connect. I love the rom but w.o data it is nutin. I had xperia x10 before and flashed tons of roms w.o any issues, but this one i cannot manage to fix.
Does anyone have any idea on how to fix this issue? and i havnt use any apn backup app.
I also need a way to get back to my stock rom, the one with FIDO. i also need tips on that.
THANKS!
EDIT: i did manage to get data on fears rom and i did apn save it, and i tried to do apn restore and CM7s rom and no luck it failed
Any new help?

No network connection

I get network connection on every single rom I can find but when it's Cyanogenmod or based on Cyanogenmod I get no network connection at all.
Tried clean installs of cm but still no network connection, is this a new way by cm to get rid of it's users?
I assume you have made sure that your APN settings are correct ?
Check your baseband if it is "Unknown".
It's unknown and network has worked before once but stopped after I updated it and clean installs didn't make it work again.
I was in similar situation. (no baseband, IMEI, sim-locked)
I restored backup through CWM, but it did'nt help.
I flashed the CM11 after data and cache wipe... and it helped. Everything came back to normal.
I x4.

No Data On Cyanogen or RR

After unlocking and rooting my stock system, it still worked fine, but I wanted more features so I went to a custom rom.
Neither CM12.1 or RR had mobile data for Verizon.
When I flashed by TWRP backup of /system, I had data again.
According to 6Binford, my APN settings are correct.
Thanks!
If you upgraded from something other than the most recent -44 build, I think you need to update the radio. You can find that in the official CM thread for the Turbo.
I've tried flashing radio files but still no data.
I've also noticed this notification every now and then, even though I am in an area where data works perfectly fine on stock ROM, and even though before this pops up I still had no data:
Data roaming
----------------------
You've lost data connectivity because you left your home network with data roaming turned off.

No data on some roms

Hello! I'm relatively new to the 3t (coming from the 6P) and have had issues getting data or voice with any rom that isn't based on Oxygen OS.
I have tried using recommended firmware with mixed results. Currently I am on DOT OS 1.2 with the latest Nougat firmware and can get calls and text messages but without any consistency. However I have no data whatsoever. I make sure to clean flash each time and have gone to stock (full clean flash including data) then back to custom.
Has anyone else experienced this or have any ideas?
Thank you!
Have you checked your APN settings?
Sounds like the default APN settings for your network is faulty in non OxygenOS ROMs. Like previous post I would recommend you to double check your APN settings with phone provider and APN settings recommended on their support webpage.
That solved it! Thank you so much. Switched from FI to at&t so it make's sense now that this became an issue now.

MI - A2 No mobile data on any custom rom

I can't seem to get mobile data to work on any custom rom. If I revert back to stock rom then mobile data works.
Calling and texting works both custom and stock rom.
I've checked APN settings and they appear to be the same as on stock. I've tried a factory reset after flashing rom, reseating sim card, resetting apn settings, turning on 'always on mobile data' in developer settings, turning on airplane mode then rebotting phone, changed preferred network, checked sim card number for data.
Any ideas as to why mobile data would only work when on stock rom?
Akolaid said:
I can't seem to get mobile data to work on any custom rom. If I revert back to stock rom then mobile data works.
Calling and texting works both custom and stock rom.
I've checked APN settings and they appear to be the same as on stock. I've tried a factory reset after flashing rom, reseating sim card, resetting apn settings, turning on 'always on mobile data' in developer settings, turning on airplane mode then rebotting phone, changed preferred network, checked sim card number for data.
Any ideas as to why mobile data would only work when on stock rom?
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Same here brother, got any solutions till now? Android 10 Pixel Experience.
Go to settings, network and choose network type to general.
Did this work for you? Did it fix your issue? Want to know because I have the same issue with Lineage OS...

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