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AOKP JB 4.1.2 Mobile data dropping and not reconnecting

I’m currently using AOKP Jellybean 4.1.2, the supposedly stable, reliable milestone version found here: http://forum.xda-developers.com/showthread.php?t=1804223
I'll try to be as thorough as possible in hopes that someone will respond and know what to do. I apologize in advance for being long-winded.
I didn’t have any issues last night when I first flashed the rom. I was able to watch youtube videos using the mobile data. I was also able to turn on wifi to sync some files from my dropbox to my phone, and then turn off the wifi with no issues. However, today after connecting to a wifi network to download a few things and browse the web, I disconnected from the wireless network and the mobile data curiously did not start up again. I DO have cellular service (3-4 bars), and I can make phone calls and check my voicemail by pressing and holding 1 on the keypad, but my mobile data doesn’t work. I looked around for some solutions, and I've since restarted my device several times, tried toggling airplane mode on and off, and did several combinations of reboots with airplane on/off and no dice.
Everytime I use the toggle in the notificaton bar area to turn off wifi, my internet connection goes with it. It says “no internet connection” in the notification background at the bottom of the screen. Once I turn wifi on, I get my internet back and it says “at&t” at the bottom, but I don’t actually get mobile data because apps like “At&t Visual Voicemail” which require mobile data to function don’t work.
I tried flashing the 1.85 radio to see if it would connect to mobile data, and same issue persisted after reboot and dalvik/cache clean. After that failed, I flashed the 2.20 radio + RIL zip files seperately (which is what I understand came with the rom), and still no dice.
For reference, my HTC One X was rooted with 1.73 firmware (I never tried to update it until last night). I did the CID spoof method to unlock my bootloader, and installed the newest version of TWRP on it. I flashed the rom and the gapps package. I used TiBu to restore program settings and a handful of my out of market apps, and the rest of my purchased apps downloaded automatically from the market after connecting with my google account. I had literally just finished reinstalling the last of my apps today via wifi when this issue started to happen.
I'd really prefer a practical method of getting this fixed that doesn't involve starting over with a fresh rom install. Reflashing at this point would be something of a nuisance since I don’t have much free time to begin with. And hey, it took a long time to load up all of my apps just right
However, if there is no other fix that anyone is aware of, I guess I could reflash or in the worst case try a different rom. It’s a shame because the rom otherwise is really smooth and runs great on the phone, in addition to not using a whole lot of resources and having a decent battery life.
Thanks in advance for any suggestions and solutions.

Here is an image of my battery drain screen showing what my mobile data is supposedly doing despite not being able to get a true data connection. Even with my wifi off, there is supposedly medium mobile signal.
And attached is another image of what happens when I turn my wifi off. I pulled the notification pane down and you can see that it says "no internet connection" at the bottom. Also, you can't really see it in that cap, but the mobile data bars behind the notification area are colored white, and there isn't any "H+", "4G", or "LTE" notifiers visible.
Edit: Attached a third image showing the "white" signal bars (i.e. no data connection). Yes, my mobile data is turned on, and I'm obviously not in airplane mode.

I figured it out eventually for anyone interested... Apparently the APN were not set. They existed on the APN list but were not visible due to a glitch in the ROM I guess. I had to add a custom APN and then the other ones suddenly appeared.
Thanks anyway.
Sent from my HTC One X using xda app-developers app

[Q] Wifi and post-call issue

Hi
I bought this phone 3 months ago and have been going through 2 major issues which have become a pain in the **s.
1) Most of the times, while making a call the screen freezes and the timer is stuck on 00:00, and the UI stops responding to any inputs, which means i cannot use In-Call features. If there's a need to make another call after the previous one then the phone needs to be locked and unlocked since the UI doesn't respond to anything without lock/unlock trick.
2) This one is more annoying and it's about Wi-Fi.
When I connect my phone to the wifi and leave it idle for say 5-10 minutes (provided there's no data being exchanged between the phone and router) and then try to open a website, it just doesn't open it with any browser and all other applications which require internet access stop working.
I have tried changing routers and even tried keeping my phone next to the router but the problem still remains. STAMINA mode is always disabled and "Keep wifi on during sleep" is set to "Always" and "WiFi optimisation" option is also unchecked. To make it more clear, the wifi icon is still displayed after idle time of 5-10 minutes on the top right corner with the uplink arrow lighted up and the downlink arrow not lighting at all.
Please reply if somebody else has the same problem and has any solution to it.
I am on stock ROM, with the latest official update 15.3.A.1.14, everything as it is.

Faced same issues for a while, after unlocking bootloader, rooting and installing a generic firmware(europe CE), issues are gone. Original firmware was with Vodafone branding and a lot of crapware.

Mobile data issue, constant switching between HSPA and HSPA+

Hello,
I am experiencing a strange issue with mobile data, the most similar thread I could find about my issue is here:
http://forum.xda-developers.com/galaxy-s2/general/fix-workaround-mobile-data-connectivity-t1149716
I am using Samsung J1 SM-J100ML, Android 4.4.4, Kernel 3.19.17-366995, Mar 26 2015, bought new as unlocked rooted
The phone was purchased new and everything worked great for a few months. Recently I took a short trip overseas to Australia and bought an Optus SIM card and installed their android app from Google play (this was the only change I can think of that could have caused my issue). Upon returning home and using my normal SIM, I found my phone is now constantly switching between HSPA and HSPA+, sometimes many times per minute. This interferes with web browsing or using chat apps, as the connections seems it must reset, which takes a few seconds each time it switches. This issue is making is incredibly frustrating to use the mobile data now. I ruled out issues with the SIM card, no mobile data issues on my other Samsung devices in the same location.
From my searches on this forum, I want to try to access the setting "CHANGE HSPA REVISION" so I can lock my device to a frequency to prevent switching, or disable Fast Dormancy.
I tried codes such as *#301279# and *#*#9900#*#, but they are not working. Uninstalled Optus app and threw away their SIM card already. I also tried starting the phone in Safe mode, but I still noticed the mobile data issue.
I can access the ServiceMode using *#0011#. I tried many combinations of selecting "Back" and entering "Q" then "0" or "00", or "Q0", "Q00", "Q0000", etc.. but nothing works.
I called Samsung for help, but they never heard of ServiceMode, and recommended a Factory reset.
My options as I see it:
1. Factory reset (long process to backup all data, reset, restore... I want to avoid). I suspect my issue is software related and will fix the issue, but its not guaranteed.
2. Find the correct "Key Input" code so I can use the ServiceMode and change settings that may help.
3. Buy a new phone.
Any ideas? Any one know the correct Key Input code to get farther in ServiceMode for this device? Thanks.

Can't text after rebooting

Every time I reboot my phone, my text messaging stops working (for roughly 3-4 hours). Everything else works fine - I can make and receive phone calls, connect to the internet, etc. I've tried using 3 different SMS apps in case that was the issue, but it doesn't make a difference. I try updating the PRL, updating the profile, even reactivating but still nothing.
I've had the issue on Lollipop and Marshmallow, and this is my second GS6 Edge. Doesn't matter whether I'm connected to wifi or Sprint network. Stock ROM, not rooted. Anyone else ever have an issue like this? I thought maybe I could mess with the settings, but when I go to 'mobile networks' I don't have the option to edit or add Access Points, and Network Operators is grayed out.

baldwin69 said:
Every time I reboot my phone, my text messaging stops working (for roughly 3-4 hours). Everything else works fine - I can make and receive phone calls, connect to the internet, etc. I've tried using 3 different SMS apps in case that was the issue, but it doesn't make a difference. I try updating the PRL, updating the profile, even reactivating but still nothing.
I've had the issue on Lollipop and Marshmallow, and this is my second GS6 Edge. Doesn't matter whether I'm connected to wifi or Sprint network. Stock ROM, not rooted. Anyone else ever have an issue like this? I thought maybe I could mess with the settings, but when I go to 'mobile networks' I don't have the option to edit or add Access Points, and Network Operators is grayed out.
Click to expand...
Click to collapse
Try dialing ##72786# then don't touch the phone. It will do its thing and reboot a couple times

Soooperstar said:
Try dialing ##72786# then don't touch the phone. It will do its thing and reboot a couple times
Click to expand...
Click to collapse
I have tried that multiple times, but no luck. Even tried ultra power saving mode in case one of my apps is impacting my text (however, still the same issue after a factory reset so it shouldn't be an app issue).

LG G5 Sim not detected only for SMS and calls

As stated I'm using the LG G5 H830 T-Mobile variant. I am getting 4G LTE data connection and everything runs well (Not in any WiFi range) Yet for SMS and calling as well as mobile hotspot I get "No USIM card' error. This happened after wiping the system and formatting data. Rebooted recovery (as per instructions on forum) then installed the stock firmware & Patch with systemless root and xposed. After this I did factor reset when just pulling the sim didn't help. Still nothing. I reflashed just the stock firmware with TWRP and SuperSU and issue is still happening. I've disabled rebooted and enabled the phone radio. SIM is in good condition and tray as well everything is SECURE and should be good to go.
I'm assuming a new SIM might be a solution. But I'm not counting on it and with Labor Day tomorrow for me I wouldn't be able to pick one up for 2 days. So here I am...hoping someone might have a fix. I know I don't have many posts on here. But I am an experienced user....just not with the more basic of problems I guess
Thanks!!

Has anyone else experienced this yet? I'm just curious...I had it fixed for a couple days. I've formatted data and done complete system wipe. Tried it resetting phone with the COMPLETE zip and TOT using LGUP. I'm receiving texts. Not calls. Not able to send either. I've activated new sim, didn't help. LG support just told me to look into warranty. T-Mobile needless to say just wanted. Sim card does show stock tmobile short code contacts but phone number shows as unknown. Hotspot won't work. I've tried setting the phone number to the sim. Nothing.
Anyways. I don't think I messed with anything, even so I've done everything to start the phone from scratch. Going to replace it, just more or less curious at this point and maybe others have had the same issue.

I believe I had the same issue as you and it was driving me crazy. I was constantly wiping data, system, etc but my phone kept giving the message "roaming indicator off" where it should show the name of the carrier. This resulted in me having LTE data and that's it- no 3g, no phone calls, etc. I couldn't even access the mobile network menu.
What ended up causing the issue was the network mode setting under wireless networks. Keep in mind at this point I'm running a patched rom which now gives more options in the network mode menu than the phone came factory with. I have an area at work where I have to switch to 3g, GSM/wcdma preferred network setting, because although I have full LTE signal, my connection goes dead. When switching back from 3g I chose the setting lte/CDMA thinking this would force my phone to stay in lte mode due to another area on an upper floor where the phone will constantly drop lte.
Anyways this resulted in my phone saying roaming indicator unavailable, the inability to make or receive phone calls, and either the mobile networks or network mode menus being grayed out. When stuck in this mode there is no way to put the phone back into the standard "GSM/wcdma/lte" mode. Even a complete reflash won't fix it. I even used lgup, which worked for maybe a day until it force closed the phone app and went back to roaming indicator unavail. I wiped every partition and even reflashed radio firmware. Nothing worked.
What ended up fixing it was using an app called v10 hidden settings which allowed me to access the network mode menu directly and re-choose the lte/wcdma/GSM setting. Incidentally on first access to this menu through the app there are only two network settings available. Once you choose a GSM setting, the rest appear.
I'm not sure if this was your issue but I hoped this helped because this took me about a week to workout.