Chinese OPO will not connect to 3G unless through secret menu - ONE Q&A, Help & Troubleshooting

Hey,
So I have a chinese OPO, on the original firmware everything worked, 3G worked, etc...but I have updated to CM12, and it'll only connect to Edge now. I've tried a few fixes, including ADP a modem bin but that didn't help. Anyone have the modem file that will work to enable 3G without having to go through the secret menu to force 3G to work?
Thanks!

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[Q] Xoom on wrong baseband

I changed the baseband of my Xoom from GSM/UMTS to USA by a mistake.
No Idea how to reset this to european settings.
The mistake happened using the app "Netzwerk" by Phillipp Mangelow.
Since then there is no chance to get an internet connection.
All settings i can directly access are ok.
The above named app has an error and offers only "USA" as selection of baseband.
Has anyone an idea how to reset this or knows an app which modifies this setting?
Xoom without radio is not even a half xoom
Kind regards,
Willy
Try tiamat new rom, there is a possibility to change it back to EURO mode
Hi,
i use a international version of motorola xoom mz601 in india and have updated to android 3.1 and use the latest baseband n_01.83.35p.
after this update the band changed to USA band 800Mhz? i cannot use any network 2G or 3G and the motorola doesn't show any network operators.
i really want to revert back the settings.now how can i downgrade my baseband and what commands i need to execute also i have tried moving to stock 3.0.1 but no change in baseband.
any apk file that would help me change the band?
thank you.
Please help
If you are rooted, and if you have a previous backup done thru recovery before, just go to recovery, advanced restore and restore system only. It should bring back your baseband.
Sent from my MZ601 using Tapatalk 2
What I did was go back to a stock 3.1 provider firmware. Being in India I used Original rom. I flashed boot, system, data and recovery. At that point the 3g radio still wont work, Let it do the OTA updates to bring it to 3.2.2 and it will start working, I think one of the OTA updates flashes the modem and or bootloader and resets it to the correct band.
I could then go back to a custom rom and it was all good, I make sure I stay away form the band settings in future.

Lost 3G/4G signal, no internet

Hello guys,
Yesterday my LG G2 from T-Mobile and also wife LG G2 from T-Mobile lost que 3G/4G icon and the internet service. Yes, both phones!
The phones can call, get sms but no internet. Already perform a factory reset, hard reset, added the right APN, tryed to change the network mode, tryed with my 3 local operators and nothing, no internet or 3G/4G signal
I'll try to return the phone to stock 4.2.2 to check if this can fix the problem, currently running 4.4.2 stock.
Any other suggestion? Maybe it's just a simple fix but coulnd't find anything.
Returned to stock android 4.2.2, using this guide: http://forum.xda-developers.com/showthread.php?t=2432476, by the Tot method and it's working again, updated to 4.4.2 via OTA and everything seems fine now :good:

Lost LTE when i enabled tethering using SQLite Editor (settings.db)

Hi,
I'am facing a big problem with my D800 LG G2
I wanted to enable tethering , so i followed instructions given here
It was a seccus enabling tehtring but when i tried to connect to LTE i was only receiving HSPAP
I did everything possible to enable LTE but in vain ( Try 2nd SIM card, Go back to JB stock Rom , make changes in Hidden menu, ..)
I think i made bad changes in Setting.db file and i can not restore original file.
Can anyone help me to restore defaut settings in this file or give me some advice to correct make change in hidden menu.
I run Stock rooted LL actually
I saw in the same thread , someone faced the same issue and resolved it by flashing T-Mobile stock Lollipop
"Flash back to kitkat and still no LTE using Simple Mobile. It must be just my phone! Guess they are not build equally!
Try everything I know how to no success and then I flash the T-Mobile stock Lollipop and LTE connected, Wow. Stupid AT&T have to remove the network type selector from us. It available to international G2 as well."
Is it safe to flash Tmobile stock ?

Note 5 SM-920P bought in China

I bought a Note 5 which worked fine with China Unicom, the phone was 5.1.1 so I decided to manually update the phone to mm. After the update the phone can make calls, but it can't pick up data signal. I've tried everything from flashing the modem back to 5.1.1 (which was the one that worked, originally) but no dice. I was wondering if anyone had a solution to this. The phone isn't rooted and its constantly trying to activate its voice and data, even though the voice all ready works.
Enter the APN settings manually for your network. The same happened to me on my Unlocked N920P. I entered the APN (Airtel India) and deleted all the others. On upgrading, it will automatically pick up the Sprint APNs. So add a new APN and enter your setting for your network manually.
shantanil said:
Enter the APN settings manually for your network. The same happened to me on my Unlocked N920P. I entered the APN (Airtel India) and deleted all the others. On upgrading, it will automatically pick up the Sprint APNs. So add a new APN and enter your setting for your network manually.
Click to expand...
Click to collapse
Thanks so much for your response. I've tried this method, but still no dice :/
hi
NavaKing0208 said:
Thanks so much for your response. I've tried this method, but still no dice :/
Click to expand...
Click to collapse
Hello
I bought Note 5 920P from china I use this mobile in Turkey bu we have some problem with this phone
for exampe there is no data over notification panel. Now phnoe android 5.1 I send picture about version.
Now I want to update Android 6,1 Usa Sprint.
Please tell me Is it any problems?
NavaKing0208 said:
Thanks so much for your response. I've tried this method, but still no dice :/
Click to expand...
Click to collapse
It happened to me too. The first step was the APN. changed the APN manually on mine but still it seemed no data connection was active. On step two I discovered that even the data seems not active, in reality there was a data connection and everything was working, but the icon was not showing due to something missing in the Sprint's SystemUI data connection icons.
So, try to put your apn manually and try and check if there is a data connection, i.e. using the browser to navigate.
---------- Post added at 11:34 AM ---------- Previous post was at 11:26 AM ----------
aksa63 said:
Hello
I bought Note 5 920P from china I use this mobile in Turkey bu we have some problem with this phone
for exampe there is no data over notification panel. Now phnoe android 5.1 I send picture about version.
Now I want to update Android 6,1 Usa Sprint.
Please tell me Is it any problems?
Click to expand...
Click to collapse
Open the notification panel - touch the "down arrow" symbol on the upper right corner to show all the icons and look there must be the data connection icon you're looking for.
As for the update: Updated myself to MM and everything works fine with the exception of 4G. This is not something caused by the update but because the LTE-4G bands the phone works are not compatible. Check yourself @ willmyphonework.net
Flash pure GSM kind of roms.
First go to official MM by ODIN, root it,
Via TWRP, flash Lamlazy ROM or aurora rom which is compatible rom without sprint stuff.
Try this rom http://bbs.gfan.com/android-8394771-1-1.html
Download link pan.baidu.com/s/1c2JZgje PW kr10
I didn't try yet. but it says N920p supported. If u are on sprint, am not sure how it works.. but GSM should work well.
That V7 of Lamlazy can be found here -- thread http://forum.xda-developers.com/show...&postcount=153

Weird Connection Issue - Two AT&T Connections

I'm having a super weird issue with my OPO. No matter what I do (install different OS, flash new modem, complete wipe including formatting drives to a different format type) I keep getting two AT&T connections on my phone. *Can't post image due to post restrictions*
I am using a WIND sim from Canada with roaming in the US. I used to be able to connect to my choice of either AT&T or Tmobile. Now when I try and connect to one of those carriers, it flashes registered on network but then does not change what network it is registered on. I've tried disconnecting from the network and then trying to connect. Nothing! The only network it will let me connect to is that weird extra AT&T network, and all call through it have no caller ID, just says call from AT&T.
Any ideas of what this could be would really help me out. I'm all out of ideas
Update - After uninstalling and re-installing everything I could think of, I am now running on CM11. If I update through OTA to CM13 the problem returns.
Update 2 - In case anyone else encounters this issue, after a whole lot of work, including softbricking my phone, I managed to get it working. You must install TWRP Materialized and install the 44S baseband. No other recovery will work, must be Materialized. After I installed the 44S baseband I updated to Omnirom 6.0 and everything is working great!

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