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[Q] LG Optimus Black internet problem

Well recently i bought a LG Optimus Black, at the begining internet and all worked just fine, and now suddenly i cant connect to internet.
I am able to connect to a wifi network, but 3g wont work, how can i fix this?
Every opptions are right.
I tried the same sim card in Samsung GalaxyS2 and some other phone, it works fine. So it has nothing to do with the SIM.

try to configure your 3g network, look for it on the internet.
i only had this problem when i install NOVA ROM, but it was easy to solve the problem.

I have tried but not helping.

Is it running on Stock ROM or NOVA?
Just like lucasmalaguti said, this problem happens only on custom ROMS.
Anyway, just check your settings.
Settings > Wireless & Network > Mobile Network > Access Point Names
Search on the internet or ask your provider for the setting configuration.
Also, if you have a few Access points, Eg. MobileInternet1 & MobileInternet2, make sure the right one is checked.
Download APN Backup & Restore app from market to delete and re-add Access Point.
Once edited/add, reboot phone for changes to take effect.

Check your APN settings
Sent from my LG-P970

I'm running a stock V10E ROM
My APN settings are OK (sent from my provider)
Tried to manually add it, but nothing helps

Today i called LG Service support.
They say that i am not the only one with this problem.
The problem seems to be caused by automatic software update (V10A => V10E).
Only solution is to reflash ROM.
So i did that and now everything works fine.
Thank you all for trying to help!

I have same problem, how do i re-flash to the old fw
Hi, I got same problem please tell me how can i re-flash my previos fw? thanks.

Hello! I'm newbie
I have the same problem. Please help! What is this ROM? How can I do this? Can this really fix my internet problem? thank you

Had same issue, thought it was the carrier but it could be the phone, hope this helps
1. turn off your OB and take the sim off
2. test the sim's 3g on some other phone
If it's working
3. put it back in your OB = problem solved
It it's not working
3. call your service provider

no internet connection via mobile network

Hello. When I turn internet connection via mobile network nothing happen. There is no icon letter icon next to my signal strength. Restar phone doesnt help. Any ideas?

mateusz3112 said:
Hello. When I turn internet connection via mobile network nothing happen. There is no icon letter icon next to my signal strength. Restar phone doesnt help. Any ideas?
Click to expand...
Click to collapse
I have a similar issue.. but only when I use a Stock Rom..
When I use a CyanogenMod based rom I connect normally.
Any suggestion if there's an option, in build.prop maybe, so I can fix this in a stock rom?

hi, you use a rom from XDA? is it happen after flashing a new rom, first boot, no mobile internet? -> how about some informations about runnign system etc. pp. was it working before with same rom? and so on....
if no internet after first boot: turn on wifi, go Settings/Xperia/Internet Settings , and try download the settings with wifi. how that?
second thought: your provider's fault?

Xperia V is not officially supported by my carrier, but I can use mobile data on cyanogenmod.
I tried to add APN for my carrier, but they don't appear, using APN Manager I could see and try to apply them, only to get an error.
I was willing to go back to stock rom 'cause I wanted to use sony's camera.. but mobile data is essential.. guess I'll to stick with cyanogenmod..

i have added my provider (three uk) network apn manually and it worked.. yesterday.. Now still I cant connect. No reaction at all. I've downloaded settings via wifi and didnt help. Im running official rom 9.1.A.1.141. It is not a provider fault - I used o2 before and it was the same problem. Sometimes restart helps. but not now,
edit. now restart helped.. i dont get it.. This is very enoying

Anyone have any ideia how to fix this issue?
In CM all APN are shown correctly, in any stock based rom I can't add any entries, or it's not shown.

N1 Evervolv Kitkat Wi-Fi problem

I installed version "2013.12.13: ev_passion-4.0.0p4.2-perdo-squished.zip" from site. All works fine without SIM: camera, wi-fi, . When I put sim card in phone, phone freezes with wi-fi menu, no wi-fi networks found, remebered connections unavailable. Even if I remove card, still no Wi-Fi untill full wipe.
I changed locale to US and EU and removed wpa.supplicant. Wi-Fix application show error and doesn't help.

TuMyP.H said:
I installed version "2013.12.13: ev_passion-4.0.0p4.2-perdo-squished.zip" from site. All works fine without SIM: camera, wi-fi, . When I put sim card in phone, phone freezes with wi-fi menu, no wi-fi networks found, remebered connections unavailable. Even if I remove card, still no Wi-Fi untill full wipe.
I changed locale to US and EU and removed wpa.supplicant. Wi-Fix application show error and doesn't help.
Click to expand...
Click to collapse
You don't want to flash 4.4.2?
Sent from my Nexus 5

TuMyP.H said:
I installed version "2013.12.13: ev_passion-4.0.0p4.2-perdo-squished.zip" from site. All works fine without SIM: camera, wi-fi, . When I put sim card in phone, phone freezes with wi-fi menu, no wi-fi networks found, remebered connections unavailable. Even if I remove card, still no Wi-Fi untill full wipe.
I changed locale to US and EU and removed wpa.supplicant. Wi-Fix application show error and doesn't help.
Click to expand...
Click to collapse
Did you do a clean flash when installing it? If not, wipe everything then flash.
Sent from my Nexus 4 using Tapatalk

Yes, I did full wipe of device. It works fine untill I insert Sim card. I think the problem is unsupported/unknown MCC/MNC.
I tried to install -2013.12.23- but nothing changed.

problem solved with CM11 firmware, just change region in wifi settings.

I have the same problem. Reported details here. Couldn't find solution. Don't want to flash CM11 as it seems less performant.
Does anyone have any recommendation to solve it?

jrub said:
I have the same problem. Reported details here. Couldn't find solution. Don't want to flash CM11 as it seems less performant.
Does anyone have any recommendation to solve it?
Click to expand...
Click to collapse
Check http://forum.xda-developers.com/showthread.php?t=2368501
in second post u can find file for N1 ev_passion-nightly-2013.12.23-squished.zip ROM

[I9295] Cellular not working

Hey guys,
in the beginning, sorry for my bad english (native german). I have a problem with my I9295 aka S4 Active. Since the update to 4.4.2, my phone gets thrown out of the network. Wlan and Bluetooth is fine. Now I flashed the official Samsung DOB4 firmware. Yes, I've downloaded the file multiple times, and the md5 sum was always right. After I flashed it, I was very happy because my cellular network was working again, I could make some calls, etc. But after 20 minutes, it started again. No network. Well, my IMEI was null, and to fix it I had to root. After rooting, my IMEI is there again (yes, the right one) and everything worked fine and was still working, up to yesterday. IMEI still there, baseband too, everything seems fine, but I can't get network. I have to reboot multiple times to get it working again, after that it's working maximum a day, after that, no network again . Atm, i've flashed CM12, but the error is still occuring. I'm very desperate, I hope somebody can help me.

I have a quite similar problem:
My I9295 loses service randomly. Happens quite often.
When I try to go to Settings/More Networks/Mobile Networks I am told "No SIM ..."
SIM is in and had been active. Phono tells me I have network reception.
After reboot it works for an hour or 20 minutes or whatever it wants to.
Sometimes it reconnects after a while, sometimes not.
When I leave it on during night netx morning reconnect works only via reboot.
SIM reader had been replaced.
Problem persists with genuine 5.0.1, with this one: [ROM][Official Nightly CM12/Unofficial CM12.1][5.0/5.1.1] builds for I9295
and WizCyan ROM.
Any suggestions?
BTW I use a TWRP recovery

Possible reason explained here
http://forum.xda-developers.com/showthread.php?p=56955843
Enjoy

Thanks for the hint.
Not sure if I get this. The problem was also there with the genuine Samsung ROM (lolipop)while the thread talks aout losing modem function after flashing custom ROM.
About previous I am not sure as I bought it used with 4.2.2 on it.
I updated to 4.4 and then 5 OTA, all genuine.
Only because the mobile kept on losing network I switched to custom ROM, but the problem persists.
At the moment I use the Pac-Man ROM 5.1.1 where it seems to be more stable.
Strange!

@augek
The linked thread isn't only about custom roms - you can end up with partly flashed baseband on genuine if you don't power off before download mode and flash using Odin.
Was the replacement job of SIM reader done by a qualified person?

Following your Suggestion i flashed the genuine lollipop with odin. Yes i switched of Prior to flashing.
And Yes the Person Who did the card reader Job is qualified.
Still the Problem persists.
So to me the question is if the Firmware (driver) is the Problem of my sim card. The sim i tried on my s4mini and doesn't cause Problems so far as far as i noticed.
P****es me of somehow.

Network issue phone restart

I use viperOS rom since i unlocked bootloader
Love. This rom
Everything seems working perfectly.
But before sometime i installed xposed... Working as well
But feel that its draining battery so fast...
So i wiped everything and do a clean install of rom
Now
I am using 2nd sim slot to use internet.....
But when i choose first slot to use internet phone turn switch off suddenly....
Is it a bug or anything eles or i do something wrong
Edit: i changed the rom custom to miui global so first sim network not showing... Shows "no service"
Again i installed viperOS Rom then network showing but i select for internet phone turn off.....
Help me to solve my problem....
Thanks....