No Mobile Network Data on Custom ROMs - Xiaomi Redmi Note 7 Questions & Answers

Hello,
I've gotten my phone's bootloader unlocked, TWRP installed and have been flashing the available custom ROMs with no success to getting my mobile data to work. I don't have this problem running the stock ROM or MIUI.eu (which I'm currently using). I prefer to run the Lineage based ROMs if possible, but I cannot get the mobile data to work on any of them.
I've got into the APN settings on the phone to see what's up there, but I can't change any of the settings, they're all greyed out. I can change the APN settings on MIUI but it works fine anyway. I think the APN settings are wrong on the custom ROMs and would like to change them so they're right, but I can't do anything about it.
I'm with Virgin Mobile Canada, which uses Bell's network. Any Virgin users on here or anyone else have this problem?

Related

No LTE on my OP2 with custom ROMs

Hey everyone. I have installed multiple custom ROMS on my phone including unofficial temasek and xperia cm 12.1 razor ROM and all of them end up with an exclamation point next to my cellular signal. Stock I have to issues with only custom ROMs. I made sure AT&T APN was correct and the preferred network was LTE. I know I have LTE signal because if I install stock it works fine. Any suggestions?
have you tried manually registering on att lte through cellular network setting?
No LTE after remote support from Oneplus Team
Guys,
I am new to this forum, so pardon if I made any mistake in posting.
Well, I have recently undergone a remote support session from oneplus team, during which I they have flashed my device with an special software (it was done to address broken fingerprint sensor repair). But unluckily I ended up with no LTE on my phone.
I was using same phone with network provide in the same area on LTE prior to that session, but later on my device no more work on LTE. Kindly help me resolving this issue.
I have tried putting my SIM in other phone, LTE works there, (other phone is Oneplus X, and in same area).
I have tried putting in other sim of same network but still no luck.
I have tried putting in a different network sim card in my phone and it works on LTE.
My understanding is, the the current ROM has locked the band which I was using earlier for LTE. Kindly advise.

Verizon Galaxy S5 no service with tmobile or metro

Before I rooted my verizon galaxy s5 I was able to use ATT sim cards but the phone would not get any service whatsoever with a tmobile sim or metro pcs sim. Everyone i spoke to at least was able to connect to the tmobile or metro pcs network, even if they were having data issues...but I was not even able to get a network signal. Finally, I rooted the phone and am using a tmobile rom thinking that may help. But no luck. For some reason my phone will not register itself on tmobile or metro pcs, Not even to just connecto to the network to make phone calls. I tried 2 different tomible roms and i think an att rom and no luck whatsoever. Anybody else experience this issue? Is there a root function or service menu that I need to access to enable the proper band? Is rooting the phone even going to change anything? Makes no sense how every other verizon s5 out there has no problem connecting to tmobile or metro but I have the only one. Ive scoured the forums and have yet to find any answer....thoughts? Oh, I also tried every APN settings combination imaginable. Even other carriers just because I was getting nowhere with the tmobile and metro APNs.
Quite a lot of your thread made absolutely no sense, so I'm not sure if this will help.
Look for a tar.md5 that contains the stock modem partition for the Verizon S5, and flash it through Odin.
Are you bootloader unlocked? I would just flash a generic klte rom, like Cyanogenmod, instead of flashing an ATT or T-Mobile rom.
camcorder123 said:
Quite a lot of your thread made absolutely no sense, so I'm not sure if this will help.
Look for a tar.md5 that contains the stock modem partition for the Verizon S5, and flash it through Odin.
Are you bootloader unlocked? I would just flash a generic klte rom, like Cyanogenmod, instead of flashing an ATT or T-Mobile rom.
Click to expand...
Click to collapse
According to a few people i spoke with the root for verizon s5 can only accept TW roms. And to clear up anything that doesnt make sense. my verizon s5 will not get any service with tmobile or metro. Works fine with att. So i decided to root. After rooting still no luck. However, before I rooted I was getting no bars at all. After rooting I was actually getting service bars but still would not get any actual service. I tried every APN setting I could find and still no luck. Thats all. I will try your advice as far as flashing the tar.md5 and let you know.
leronlb33 said:
According to a few people i spoke with the root for verizon s5 can only accept TW roms. And to clear up anything that doesnt make sense. my verizon s5 will not get any service with tmobile or metro. Works fine with att. So i decided to root. After rooting still no luck. However, before I rooted I was getting no bars at all. After rooting I was actually getting service bars but still would not get any actual service. I tried every APN setting I could find and still no luck. Thats all. I will try your advice as far as flashing the tar.md5 and let you know.
Click to expand...
Click to collapse
There was a bootloader unlock exploit released - it allows any rom to be flashed. It's been in the top development posts for weeks. Go check that out, and you can flash cyanogenmod.
I actually am in a similiar situation except I am already on CM13 using a previously Verizon S5, I just started Tmobile service yesterday and in general I can make calls but data is rather inconsistent. Example right now when I make it call it falls down to 3g (Normal) but when I disconnect it tries to connect to H+ then 3G but all of them don't supply it data so it just swaps around 3G LTE and H+ and I have to airplane mode on/off to fix it. So this person may still have issues using CM13. I did already go over the APN information with people from TMobile and from post around the web. Does anyone think that flashing the Tmobile s5 modem stuff will fix this?
you just need to get the correct APN settings
buschris said:
you just need to get the correct APN settings
Click to expand...
Click to collapse
I've tried the correct son settings. It didn't work. I used the settings found online for T-Mobile. I called T-Mobile. Non of the settings worked. I flashed back the the stock rom. No joy. flashed a verizon s5 rom again. No joy. I am starting to think that this is the only verizon s5 that won't allow t to register on T-Mobile's network.

GSM on XT907 Lineage Rom?

I'm moving to Australia soon and need GSM to work when I get there. My RAZR M was unlocked when I got it (mobile network settings were set to global) and I was wondering is GSM worked by default or if I had to change anything before hand. Any reply would be greatly appreciated. The only thing I've seen is an APN xml file for 4.0-4.4 but I doubt it will work since I am out of that range (6.0) and there are no APN settings even present in the Lineage settings menus. I need it to work with Telstra.
bump*
Nothing? really?

Going from VS99516B VZW to US995 to work on T Mobile

Hi XDA,
I've been reading up and following guides to root using DirtySanta. I just finished downgrading from 16B to 13A, and just about to start the root process.
However, I'm confused about afterwards how to get the right kernels/roms that I'm looking for. I read from this thread that I need a US995 ROM installed with a konvergence kernel (is this correct?) to enable me to get Tmobile LTE signal.
https://forum.xda-developers.com/v20/how-to/verizon-lg-v20-vs995-poor-network-t-t3539491/page3
But since this thread is a bit dated...
- I want to know what are some recommendations for current US995 ROMs? Looking for either STOCK (restock?) or something that is recommended to many.
- Can someone point me to a kernel that is appropriate for what I'm looking for?
- A guide to installing kernels?
Thanks!
You can flash any rom you will get lte regardless, though you cant do Voice over lte. Make sure you have the proper Apn setting. Your verizon rom should only need to be switched to global mode and add the right apn for it to work, i used my ls 997 with a verizon rom, for my gsm carrier and it worked perfectly fine, just need like i said , the right apn settings.
how did u flash a verizon rom on your LS997?
siulmagic said:
You can flash any rom you will get lte regardless, though you cant do Voice over lte. Make sure you have the proper Apn setting. Your verizon rom should only need to be switched to global mode and add the right apn for it to work, i used my ls 997 with a verizon rom, for my gsm carrier and it worked perfectly fine, just need like i said , the right apn settings.
Click to expand...
Click to collapse

Strange Network Issues With Unlocked SM-G935P (Sprint) on MetroPCS

Hey guys, I could use a little help here. I've done some firmware flashing on phones years ago, so I'm not a total noob, just haven't needed to in a long time.
Anyway, I recently picked up an unlocked Sprint S7 edge (was a really good deal) and I'm trying to use it with Metro now. The issue is this. If I set the network to GSM mode, I can make phone calls just fine, but data is totally not functioning. If I switch it to LTE/CDMA mode, the data works beautifully, but I can't make or receive any phone calls. It just instantly hangs up if I try to dial out or goes to voicemail if someone calls me.
I've activated the IMEI with my carrier and verified that the phone is indeed unlocked. I'm guessing this is just some annoying Sprint bug put in there to make the phone not work right on other providers. Any ideas what needs to be done? Do I need to run a third-party ROM, flash a different modem to it? Something else?
I really appreciate any tips here.
What firmware is the phone running?
lvpre said:
What firmware is the phone running?
Click to expand...
Click to collapse
Hi Ivpre,
Thanks for responding. The phone is running Software version G935PVPU6BRD2, baseband version G935PVPU6BRD2, it's HW revision 7.0 and Android 7.0. Kernel version is 3.18.31-12623509.
I've tried using a few SM-G935U ROMs but they all have failed so far and left the phone in a boot loop. Only by reflashing a Sprint ROM am I able to successfully flash it.
I assume I'm just not selecting or finding a ROM that the same or newer version, as I've read about the downgrade issues with the bootloader. Any idea how to match one? I'd be fine with pretty much any ATT/T-Mobile/Metro ROM since that should fix my issue for the time being. A factory unlocked ROM would be nice though.
I have a T-Mobile Sim (same network Metro uses) in my unlocked Sprint S7 Edge. Network mode is set to Automatic and everything works fine.
Did you Add the APN for T-Mobile? I had to add the T-Mobile APN https://support.t-mobile.com/docs/DOC-28006
And the ALSO add a second APN named internet, with no other values changed. The 2nd one is the one selected, not sure why, but it works that way.
I would like to flash a T-Mobile Rom or the U Rom but they are on Baseband 4, which will not work since our phones are now on Baseband 6(5th number from the right in the firmware version.)
Did you try changing the APN settings?
gullzway said:
I have a T-Mobile Sim (same network Metro uses) in my unlocked Sprint S7 Edge. Network mode is set to Automatic and everything works fine.
Did you Add the APN for T-Mobile? I had to add the T-Mobile APN https://support.t-mobile.com/docs/DOC-28006
And the ALSO add a second APN named internet, with no other values changed. The 2nd one is the one selected, not sure why, but it works that way.
I would like to flash a T-Mobile Rom or the U Rom but they are on Baseband 4, which will not work since our phones are now on Baseband 6(5th number from the right in the firmware version.)
Click to expand...
Click to collapse
So you are using the Sprint firmware on T-Mobile? Everything works well? I'm thinking of jumping to cricket this summer, but one phone is stuck on b5 (the other is still rocking 4), so I was a little worried. So basically you just put in the SIM card and added the APN's?
lvpre said:
So you are using the Sprint firmware on T-Mobile? Everything works well? I'm thinking of jumping to cricket this summer, but one phone is stuck on b5 (the other is still rocking 4), so I was a little worried. So basically you just put in the SIM card and added the APN's?
Click to expand...
Click to collapse
Yes it was working fine with a T-Mobile Sim card and edited APN's. It is now back on Sprint because T-Mobile coverage is poor/non existent inside my work. I will be porting one of my SERO lines to T-Mobile but keeping one with Sprint. T-Mobile only uses Band 2 and 4 where I live, If you live somewhere that has band 12, it may not be unlocked in the Sprint Firmware.

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