I'm having an odd issue. I've been running the latest Hyperdrive ROM release on my S3 for about a year now, but I can't stand Touchwiz ROM's so I've tried flashing AOSP ROM's such as CM, AOKP, even Beanstalk. I love all of these ROMs for tons of reasons but I keep running into the same problem, everything works great but I can't receive mobile data. My mobile network state is Disconnected and I have no idea how to fix that. I can text, call, and connect to wifi fine, but no mobile data. I've backed up my EFS but I'm not sure that's connected to the same thing. I have the network set to "CDMA/LTE" (would be more specific but each ROM has it different), but for whatever reason the APN settings are inaccessible. The menu option is clearly there but I cannot open it to ensure I'm using the LTE APN. I decided to give this another go yesterday, and still no dice. However upon restoring my CWM backup of Hyperdrive, I have now lost 4G and am stuck on 3G. My network type now shows eHRPD and while I can access my APN's (I was always able to on Touchwiz ROMs) I can tap on the Verizon LTE APN, but it seems to make absolutely no change to the actual APN. In fact when I reboot it it defaults back to eHRPD all over again.
So, 1. have I somehow screwed myself over? and 2. what am I missing with AOSP based ROMs?
Thanks for any and all help.
TheCing said:
I'm having an odd issue. I've been running the latest Hyperdrive ROM release on my S3 for about a year now, but I can't stand Touchwiz ROM's so I've tried flashing AOSP ROM's such as CM, AOKP, even Beanstalk. I love all of these ROMs for tons of reasons but I keep running into the same problem, everything works great but I can't receive mobile data. My mobile network state is Disconnected and I have no idea how to fix that. I can text, call, and connect to wifi fine, but no mobile data. I've backed up my EFS but I'm not sure that's connected to the same thing. I have the network set to "CDMA/LTE" (would be more specific but each ROM has it different), but for whatever reason the APN settings are inaccessible. The menu option is clearly there but I cannot open it to ensure I'm using the LTE APN. I decided to give this another go yesterday, and still no dice. However upon restoring my CWM backup of Hyperdrive, I have now lost 4G and am stuck on 3G. My network type now shows eHRPD and while I can access my APN's (I was always able to on Touchwiz ROMs) I can tap on the Verizon LTE APN, but it seems to make absolutely no change to the actual APN. In fact when I reboot it it defaults back to eHRPD all over again.
So, 1. have I somehow screwed myself over? and 2. what am I missing with AOSP based ROMs?
Thanks for any and all help.
Click to expand...
Click to collapse
I would try flashing a stock ROM such as the one on ScottsROMs.com
The 4.3 stock rooted, OTA disabled, UNlocled boot loader and no Knox.
See if you can get data with that. Firmware for the radio may have gotten messed up, and this would re-write that data (long shot, but worth a try). Another option would be to re-flash the radio maybe.
And now that I think of it, which radio are you on? MF1, ML1, NE1? Because I think I read somewhere that certain ROMs require a certain radio newer than _____ (don't remember which radio).
XdrummerXboy said:
I would try flashing a stock ROM such as the one on ScottsROMs.com
The 4.3 stock rooted, OTA disabled, UNlocled boot loader and no Knox.
See if you can get data with that. Firmware for the radio may have gotten messed up, and this would re-write that data (long shot, but worth a try). Another option would be to re-flash the radio maybe.
And now that I think of it, which radio are you on? MF1, ML1, NE1? Because I think I read somewhere that certain ROMs require a certain radio newer than _____ (don't remember which radio).
Click to expand...
Click to collapse
Thanks for the help. I flashed a 4.3 ROM as you suggested, and no difference. I then chased some threads around and decided to just factory reset it as if I was going to return it. Still nothing, I get 3G, not LTE. I was using MB1 before I flashed an AOSP ROM, at which point I flashed the MF1 firmware and then the ML1 modem. That did nothing to fix my issue. I'm not quite sure what else I can do at this point.
TheCing said:
Thanks for the help. I flashed a 4.3 ROM as you suggested, and no difference. I then chased some threads around and decided to just factory reset it as if I was going to return it. Still nothing, I get 3G, not LTE. I was using MB1 before I flashed an AOSP ROM, at which point I flashed the MF1 firmware and then the ML1 modem. That did nothing to fix my issue. I'm not quite sure what else I can do at this point.
Click to expand...
Click to collapse
Hmm... ML1 should be new enough.
That's a bizarre issue.
For me, I mainly get 3G. It seems as if either Verizon pulled some LTE towers near me, or my data antenna doesn't have very good contact. Maybe you're having the same issue.
Do you EVER get 4G? Or literally never?
Problem Solved - I restored the CM12 backup and now I have signal. Do you folks think I will continue to have problems if I attempt to go back to KK again?
After trying the CM12 Nightlies, I decided i wasn't a fan and decided to try some KitKat AOSP Roms before going back to CM11. My first mistake was installing the AOKP Rom which wasn't officially supported for the Sprint version. During set up I realized that there was no cell data and tried to unroot. My second mistake was when I got cell signal back; I decided to test if the initial loss of signal was just a fluke. Re rooted and reflased the same AOKP rom. Once again i lost cell signal. However, when I unrooted to stock this time there was no cell signal on the stock rom. I have no idea how to fix it. I've tried to flash the .pit i saw in another post and tried to use the "Phone EFS Clear" in Odin to no avail. At this point I'm rooted with a the Stock ROM and no cell signal. I realize I got myself into this mess by being dumb but I could really use the help in fixing the issue.
Info - Rooted with TWRP Recovery running Out of Box Stock Rom.
APN fix!
This will fix signal issues!
Thanks, if I go back to a KK ROM and have the same issue I'll have to try it out.
Hello everyone,
I was on Lollipop 5.1.1 Stock and not rooted then i decided to give rooting a shot. I downloaded Cataclysm and flashed successfully. everything was fine then i discovered that there is no Cellular Data connection. Rebooted and tried all possible things but didn't work. Finally gave up and flash Cyanogenmod 12. worked perfectly, nothing was wrong and cellular data was fine. After a while i wanted to come back to the clean stock lollipop so i downloaded and flashed Factory Image of Lollipop 5.1.1. Weirdly the Cellular Data doesn't work, i have no idea why or what may cause the problem. Please note that my Nexus 5 is from Amazon Germany. I doubt that there might be something wrong with the radio image ( meant for US models ?!! ) but i don't know really or have no clue what might be causing this !!!!
Any help is appreciated. Thanks in advance
FIXED
After spending 7 hours moving between different ROMs, i found out what was causing the problem of cellular data. The problem also exists after flashing stock image and Cataclysm. I noticed that on CM12 there was one option in the APN settings that was different from stock and Cataclysm. The MVNO type was set to None however in stock and Cataclysm it was IMSI. I don't know how or why would android change or decide that on its own and i also have no idea what does this option do. I guess that this may help many people who are suffering from the same issue ( also people who updated stock ran into same problem )
Don't know where you are but, every time that has happened to me a hands free activation fixed it.
Sent from my Nexus 5 using Tapatalk
Been using H2OS for a while now. Even installed the OTA update. Everything is super smooth and battery life is pretty darn good.
Now I'd like to go back to CyanogenMod 12.1 (and maybe try CyanogenMod 13) but every time I flash another ROM I will have no phone signal and WiFi will not work at all.
Trying to find a carrier it will result in: Error searching for networks
Clicking the WiFi icon which is toggled off will result in nothing happening
I tried to flash a ROM and the suitable modem via fastboot flash modem
Tried ROM's like CyanogenMod (stable, nightly, 11), OxygenOS and so on but all of them show: Unknown
Would be great to get help on that! Kind of annoying not being able to enjoy the freedom flashing other ROM's.
hea9vy
Do you have an IMEI number displayed in your settings app?
back up your efs if u have it and restore it after flashing new rom
I recently rooted and flashed Sultan's MM ROM. I began to have network issues and this morning I saw No SIM Card error. Rebooting fixes it for a while, before it returns. I also see that the signal indicator drops to no bars a lot (used to have this on Lollipop too). I tried resetting APN settings. That didn't help much.
I flashed using TWRP 3.0.1. Could that be an issue? I see many threads saying that 2.8.6 was stable.
In this thread, the person said they had flashed CM Snapshot to address a similar error. Is that something I have to do? If so where can I find it? I am on TMo USA.
Or is there another fix?
Have you flashed latest modem?
http://blazingphoenix.in/mzo/ONE/Modems/