Develop Bugs

[Q] Lost Data Signal

I recently (1 week ago) flashed Paranoid Android's latest ROM (3.99 I believe) and have been running flawless since the flash. However, this morning my phone hasn't been able to pick up a data signal. I can connect to WiFi and also can receive calls (I am getting phone signal), but no data is working on my phone unless I connect to a WiFi signal.
What I've tried:
- rebooting the device
- updating profile and prl
- rebooting to recovery and fixing permissions
- rebooting the device
- toggling wifi and data (on/off)
- rebooting the device
Did I mention I rebooted the device? Nothing.
Any help here?

joshuaharp said:
I recently (1 week ago) flashed Paranoid Android's latest ROM (3.99 I believe) and have been running flawless since the flash. However, this morning my phone hasn't been able to pick up a data signal. I can connect to WiFi and also can receive calls (I am getting phone signal), but no data is working on my phone unless I connect to a WiFi signal.
What I've tried:
- rebooting the device
- updating profile and prl
- rebooting to recovery and fixing permissions
- rebooting the device
- toggling wifi and data (on/off)
- rebooting the device
Did I mention I rebooted the device? Nothing.
Any help here?
Click to expand...
Click to collapse
Is data even enabled? Check and uncheck, reboot (Settings > Wireless & Networks > More > Mobile Networks > Data enabled)
Do you have a data usage cap set?
It sounds like Sprint cause of the profile/prl. I've had outages for my area before, luckily my personal phone is on AT&T...

oj4y said:
Is data even enabled? Check and uncheck, reboot (Settings > Wireless & Networks > More > Mobile Networks > Data enabled)
Do you have a data usage cap set?
It sounds like Sprint cause of the profile/prl. I've had outages for my area before, luckily my personal phone is on AT&T...
Click to expand...
Click to collapse
Thanks for the suggestion, unfortunately I've tried it already. I do not have a data cap set on the phone. I'm hoping it is with Sprint and not anything too complicated. If other co-workers have Sprint and their data works, would that indicate that it is on my end?

The data issue with sprint is because its a 4.3 ROM, and data with those ROMs( on sprint ) is hit or miss. They're getting better, but not 100% yet. Just flash back to 4.2.2 and you should be fine
Sent from my Galaxy Nexus

Preferred network type won't change

Hi,
i'm currently running the latest CM13 and have a problem with the Preferred network type. It stays on "LTE (recommended)" and i can't change it to 3G or 2G. In Phone information (*#*#4636#*#*) it stays on "GSM only" and won't change to anything.
When i go back to LG's Stock 6.0 all changes work. With previous versions of CM13 (first 5 versions i think) it works also.
Does anyone have any idea?

Chipstepper said:
Hi,
i'm currently running the latest CM13 and have a problem with the Preferred network type. It stays on "LTE (recommended)" and i can't change it to 3G or 2G. In Phone information (*#*#4636#*#*) it stays on "GSM only" and won't change to anything.
When i go back to LG's Stock 6.0 all changes work. With previous versions of CM13 (first 5 versions i think) it works also.
Does anyone have any idea?
Click to expand...
Click to collapse
I have the same issue on my LG G4 h815. I cleanly flashed the latest nightly of CM13 (cm-13.0-20160102-NIGHTLY-h815.zip), after first upgrading to the stock 20A image and installed TWRP. I flashed CM13 using TWRP. Then I flashed nano gapps. H+ is the fastest cell tech here, and my phone just can't use the cell network (it seems to connect, but never shows H+ and no data bits are routed). And when I went into the menu to select 3G as the preferred network, it won't let me change it from LTE. It clicks when I choose 3G and 2G, but the selection stays on LTE. When I go into the special menu for radio options, same thing, I can't select a different network mode (it simply stays on the current selection). Wifi works just fine, but cell phone use doesn't work -- no calls, no data. I also upgraded to the next nightly, but it didn't make any difference in behavior.
@Chipstepper Can you tell me which CM13 image worked? I'm going to try cm-13.0-20151125-NIGHTLY-h815.zip ..

Same Problem here on my Moto X 2014. I tried every CM13 nightly between Christmas and early January. I was never able to change the Radiobutton in Preferred Networks and connection in phone information was always GSM only. I also tried a clean flash of the cm-13.0-20160108 nightly, still the same problem.
Now I switched back to my CM12.1 backup where it's working.
Can somebody name a nightly where it's confirmed working?

LTE Only mode Android 6.0

Hi all, since updating my G3 to android 6.0 I can no longer access LTE only mode via the hidden menu, when I select it I just get the no service icon and it's the same when I select LTE bands too. However in auto mode I can receive LTE just fine.
I tried re flashing 5.1 and LTE only now doesn't work there either just gives me no signal unless I use auto mode. Before I updated I was able to select LTE only and even change between the 800 and 1800mhz bands.
Any ideas? I have already fully factory reset, wiped cache etc to no avail.

Modern smartphones have a large number of partitions.
During the upgrade occurs to override many of these partitions in an irretrievable.
It's one of the reasons that are not always worth it improve the system, if everything works as expected.

Network Signal Dropping after update to 6.0M (Poland)

When i bought D855p it came with 4.4, then i updated to 5.1, all official. After this i installed Cyanogenmod 12.1 and everything were fine. But when i installed 6.0(poland) my network signal keeps droping the intire day, it changes to UMTS and HSPA. I cant use my phone as a phone. The only way to solve this is, every time that i turn off the cel or put in airplane mode, is enter in MOBILE NETWORKS > NETWORK OPERATORS > SEARCH NETWORKS and choose GSM. (but i need to do this EEEEEVERY TIME that my cel turns off/airplane mode).
6.0 is the only ROM that i can choose GSM and the signal keep ~stable~. At least i can use my phone as a phone !
I did a backup of my IMEI before installing cm12 as well.
Things that i already tried :
-Flash ALL modem (ALL) , including 21C.
-intall cm13 and after cm12. Using TWRP 2.8 and 3.0.
-stock 4.4 , 5.0 , 5.1 and again 6.0. Using LGFlashTools
-MANY factory resets and wipes !
anybody can help me ? :good:

Same issue. I am on stock 4.4 and mobile network signal keeps dropping on weak signal area. I set to gsm/edge mode to mobile network. But nothing goes fine.

http://forum.xda-developers.com/lg-g3/help/lg-g3-4g-network-drops-t3394408#post67304224
Try this. However in your case download the Polad specific .kdz files

engmia said:
http://forum.xda-developers.com/lg-g3/help/lg-g3-4g-network-drops-t3394408#post67304224
Try this. However in your case download the Polad specific .kdz files
Click to expand...
Click to collapse
i'll try ! thanks

engmia said:
http://forum.xda-developers.com/lg-g3/help/lg-g3-4g-network-drops-t3394408#post67304224
Try this. However in your case download the Polad specific .kdz files
Click to expand...
Click to collapse
Doesn't work , sadly :crying:
i also tried to put in Network mode : GSM/WCDMA ( worked ) but when i choose GSM/WCDMA/LTE auto , signal drops every time. It is a solution to do this, but i cant use my LTE, and it sucks ...

Disable VOLTE n go to ur models service menu (check google) for me it was
*#546368#*851# (my model = d851)
*#546368#*XXX# (ur model=D8XX) verizon sprint numbers are differently
go to field test >network mode>set GSM permanently (try different gsm 850,990,etc)
Back > RAT selection > select GSM
U cant have network problems now cuz ur permanently set to gsm dont use 3g or 4g use wifi
hit like it helps

tevims said:
Doesn't work , sadly :crying:
i also tried to put in Network mode : GSM/WCDMA ( worked ) but when i choose GSM/WCDMA/LTE auto , signal drops every time. It is a solution to do this, but i cant use my LTE, and it sucks ...
Click to expand...
Click to collapse
I'm sad to hear that. Try also flashing modem 21C. There are also other guides for restoring your signal around the forum, different things seem to work for different people.

Pixel 2 XL cellular data issue with any custom ROM

Recently i have entered some state in which mobile data is busted on my phone. I have tested multiple android pie roms to find the same thing in each. When i flash the latest stock android (PQ1A.181205.002), mobile data is fine. In this broken state i can see the signal bars with a little 'R' by them (notification on lost mobile data connection Data roaming is turned off. tap to turn on). Every time i navigate into Settings> Network & internet > Mobile Network > Advanced > Carrier Settings. The screen will flash and take me back to Mobile Network, this happens with every custom rom tested. The app SprintDM tries to set up the phone 5 times and then fails. Phone codes seem to have no effect. the code 4636 will allow me to view current info in which it says mobile data disconnected. It doesn't appear to matter if i connect to wifi and allow the basic stock apps to update first. Reboots do not help. I even tried flashing the modem and radio for PQ1A.181105.017.A1 and OPM4.171019.021.R1. I can also say the phone app shows a message "This device is not supported and phone calls may not work correctly". Phone calls work fine. Previously i was running LiquidRemix (10.0.2) just fine, everything working. Randomly mobile data died so i tried a update to LiquidRemix (10.0.3) and still busted. Tested multiple other PIE roms to find the same. And again if i flash any stock firmware mobile data is fine. Anyone else see this or have an idea of how to fix this for custom roms?

I rooted my pixel2xl yesterday and installed Havoc OS.
Today I was out with my family and was trying to navigate via Google maps and it continuously displayed error "try again"
Status bar was showing lte connection then I tried opening chrome and was unable to use mobile data even if it being on and active.
I am planning to move to Stock again tomorrow

vipulkarkar said:
I rooted my pixel2xl yesterday and installed Havoc OS.
Today I was out with my family and was trying to navigate via Google maps and it continuously displayed error "try again"
Status bar was showing lte connection then I tried opening chrome and was unable to use mobile data even if it being on and active.
I am planning to move to Stock again tomorrow
Click to expand...
Click to collapse
vipulkarkar, did you find out any other additional info on this? I went back to stock and everything is fine but would very much rather be running a custom rom.

Just seeing this post, fortunately, I've not run into this issue on stock or custom roms ... What I do run into, on stock or custom roms, is when I leave my house, with a T-Mobile CellSpot, I tend to switch to 3G or H+ in an LTE area. I sometimes have to cycle airport mode a couple times to get LTE back.. So odd and annoying!

Is there something we Sprint users could do to help the devs include Sprint connectivity in their roms? Like provide a nandroid backup of our device or ?