Database Develop

[Q] no data connection

Hello.
Having problems with my I8190N. About 2-3 days a go it suddenly lost ability to connect into internet. I can switch data connection on or off, it doesnt make any difference. I have tried to reflash various ROMs and it's all the same, no internet. I get the usual signal bars but no H/G/E marks.
It did not happen after flashing, had CM11 on it for days and I could connect Internet just fine. No carrier limitations either, I can make calls out and same SIM in my old phone can go to internet.
Should I flash the stock ROM/bootloader back and RMA it? Or is there something else I can do? (perhaps known issue and solvable on my own)
Phone is fairly new, bought it in August as brand new.

i suppose APN settings are correct?
you can try to flash another baseband to try with it, what is yours current baseband?
basebands you can find here for N version, XXAMJ ist newest and working for me...

I had the same problem a couple of days ago. It turns out that my problem was the simcard, have you tried to put another simcard in your phone and see if it works?

I have this problem, same with two phones and two SIM cards, both phones are ZTE, both problem SIM cards are on Vodafone, both phones have no problem connecting to data via t mobile sim? This leads me to believe that voda data does not work on zte phones, apn details are correct. Does anyone knowa fix?
finally sorted it........... f'd around with a few different apn's and even phoned up talktalk(same as vodafone network) who confirmed I had the right settings which I hadnt!
Found the correct settings on the geeksquad website. seems i didnt need to bother filling out some of the fields and then wham internet connection straight away!
Sent from my ZTE V967S using xda app-developers app

Droid 3 not working on T-Mobile

I recently sold this phone to somebody on T-Mobile, but they're getting this message "no GSM/UMTS networks were found". The phone worked perfectly on AT&T and has the build.prop edits. I really don't want them to have to return the phone since it was working fine, so does anybody have any idea how to fix this?
It obviously has the XT883 radio. I tried using my mother's sim card in the phone and I actually had the same issue, but upon putting in my own AT&T sim it stopped having this glitch. I figured since the phone was working on GSM it was just an issue with my mother's sim, but I'm completely lost as to what to do to get the phone to find the T-Mobile network. I've already tried manually connecting to T-Mobile 2G and 3G in the network settings, but this didn't work. Factory resetting and reapplying many different radios and different build.prop edits also didn't fix this issue.

thats strange . i sold a droid 3 flashed with the gsm radio to a guy using tmobile and it worked fine,only issue was in the area we were in,tmobie wasnt running on 1900mhz and he only had EDGE.
did you try to SBF the phone and repeat the procedure completely? maybe he messed around with something in the root manager.

shnish said:
I recently sold this phone to somebody on T-Mobile, but they're getting this message "no GSM/UMTS networks were found". The phone worked perfectly on AT&T and has the build.prop edits. I really don't want them to have to return the phone since it was working fine, so does anybody have any idea how to fix this?
It obviously has the XT883 radio. I tried using my mother's sim card in the phone and I actually had the same issue, but upon putting in my own AT&T sim it stopped having this glitch. I figured since the phone was working on GSM it was just an issue with my mother's sim, but I'm completely lost as to what to do to get the phone to find the T-Mobile network. I've already tried manually connecting to T-Mobile 2G and 3G in the network settings, but this didn't work. Factory resetting and reapplying many different radios and different build.prop edits also didn't fix this issue.
Click to expand...
Click to collapse
If you did your sim unlock with an AT&T SIM, more than likely they would need to repeat it with a T-Mobile SIM as it usually adds that carrier's SIM cards to the white list.

Note 5 at&t emergency calls only issue.

Hello. About a 4 months ago i have bought from eBay a note 5 at&t version. I live in Greece and my network operator is WIND GR. The phone works fine but from time to time i get an emergency calls only message. And i can't get and do a phone call. If i restart the phone everything goes to normal. Sometimes it goes on and off by itself (the problem).
Have been anyone experiencing the same issue? If the phone is incompatible with my network operator should it not work at all?

Did you tried to change the sim card? Maybe issue is from sim or from sim slot

johnny.goldy said:
Did you tried to change the sim card? Maybe issue is from sim or from sim slot
Click to expand...
Click to collapse
My sim is new. When i purchased the phone i have changed my old sim with a new sim 4g compatible.

It happened again. And i am missing calls like this. I will smash it with a hammer

Go to settings, backup and reset, then reset only network settings, see if any better signal

johnny.goldy said:
Go to settings, backup and reset, then reset only network settings, see if any better signal
Click to expand...
Click to collapse
Done that right now. Tomorrow i will get a new sim card and i will post if anything gets better. Thanks for the help.

Update of the situation. I have changed sim card 2 times. It still happening. My phone runs at nougat now and the problem still appears as before at 5 and 6 Android version. I currently gonna change service provider that has better and stronger signal. From what i have discovered. When the phone looses signal due too poor service provider signal sometimes it can't register to network by itself. If i enable airplane mode and then turn it off it comes back. Any clue? If it's hardware issue what can i change?

Should i have at the mobile networks auto detect or manual and my carrier?

SM-N950F 4G problem after last dec update

Hi guys, I have an issue with 4G after the last dec update. In 4G/3G/2G auto connect mode, usually the receiving data arrow ( v arrow below the 4G symbol in notification bar) gone missing and thus the connection got lost. Only transmitting arrow is visible (the ^ one). I have to wait for some minutes or turn to flight mode and back to get my data connection back.
In the beginning I don't really sure this issue is caused by the latest update, but after I tried nearly everything, including factory reset which is doesn't help, I think that the update is the problem.
I have tried my sim on another phone and it worked normally. I have tried another sim on my note 8 and it got the same problem.
Oh and this is only a 4G issue. My 3G works normally. And before the update, I never experienced this kind of problem.
Two of my friends got the same note 8 and one of them is also using the same carrier as me, but neither of them experiencing this issue.
Anyone can help?
Thanks in advance

I had this issue too, it seems 4g connection only got the problem...,

Problem solved, they replace my device

I have the same problem but seems like in a different way, when I got the phone first time I contacted my service provider to activate the 4G service cause it was inactive on my line due to provider's issues, anyway the phone worked on 4G for only 2 days, after that it kept working on 3G, I contacted the service provider many times but they have no issues with my SIM or handset.
I still don't know what is the problem, is it a hardware malfunction? Is it an installed app? Is it a Samsung Update? I don't know!

have tried getting a replacement sim card, I had same problem in the past and they had by mistake sent a sim that was not 4g, got replacement and problem solved

Well, the problem is that it worked at the fist time on 4G so the SIM was 4G not 3G, but I have just comeback from their store, at the first the technical support did something in their system and switched the phone to airplane mode then turn the network ON back and the deice worked on 4G but after a couple of minutes the phone switched to 3G without going back to 4G, then he advised me that this problem either a SIM or handset problem and it's always 90% SIM problem, so we changed the SIM card and the phone is working on 4G for around 30 minutes till now, I hope it will keep working on 4G

2 days and phone is still working on 4G, it was a SIM card problem

Aoa dear
I.have the issue of secure folder as its not there in my cell phone and when i install it from play store and open it but failed to open as it give the option knox mode failed

Samsung note 9 N9600 VZW network issue

Hi guys,
My toy is a samsung note N 9600 and its factory unlocked. Last week ported out from T-mobile to keep my original number and facing a wried issue.
The day I ported out from T-mobile, VZW network couldnt be recognized when I tried to activate the VZW sim card. "No network connection." and no call or text can be made. However, after I RESET my device to factory model, it SUCCESSFULLY recognized VZW and LTE function works well. Sounds wried? The story doesnt end here.
Yesterday after I turned off the VZW sim card by accident-- n9600 is a dual sim card which allows you to turn either sim card off-- the network connection lost again, im not talking about LTE connection, but all network service including internet, phone call and text function. Tried a lot to get the connection back but failed. Guess what? RESET, THEN VZW comes back!!! Being driven by curiosity, I turned off the sim card agian, and then, as my expect, no network connection. Ok, rest---works---turning off sim card---no connection---reset……
I am really annoyed by this and have no idea why it is. So if anyone of you have clue of it, plz let me know. Thank you in advance!
Teddy

No one experienced same issue before?