Database Develop

LG Optimus Black signal problem

I have a LG Optimus Black with 4.0.4 and i cannot receive any signal. Phone is not rooted. I did a factory reset on it but it didn`t help. Some times i have a signal for about 2 - 3 mins. Help?

cristiann1 said:
I have a LG Optimus Black with 4.0.4 and i cannot receive any signal. Phone is not rooted. I did a factory reset on it but it didn`t help. Some times i have a signal for about 2 - 3 mins. Help?
Click to expand...
Click to collapse
Signal? You mean data (3G)?
Have you checked your APN settings under Mobile Netwrks? (I think there was a "More" option). These need to match your carrier's required settings.

androcraze said:
Signal? You mean data (3G)?
Have you checked your APN settings under Mobile Netwrks? (I think there was a "More" option). These need to match your carrier's required settings.
Click to expand...
Click to collapse
It seems ok to me.. but under the Available networks i cannot select a network, it says Your sim card does not allow a connection to this network (i am trying to connect to my network)

cristiann1 said:
It seems ok to me.. but under the Available networks i cannot select a network, it says Your sim card does not allow a connection to this network (i am trying to connect to my network)
Click to expand...
Click to collapse
Look up the defaults from your carrier and verify everything. I ran into an issue where my carrier changed things around; older SIM cards used different settings than newer cards. If you went online, only the newer settings were listed. I had to do some searching to verify the old SIM card settings.
What network?

androcraze said:
Look up the defaults from your carrier and verify everything. I ran into an issue where my carrier changed things around; older SIM cards used different settings than newer cards. If you went online, only the newer settings were listed. I had to do some searching to verify the old SIM card settings.
What network?
Click to expand...
Click to collapse
i`m on orange (romania). i tried using a vodafone sim as well but it didn`t work.

Ok, the best / weirdest thing happened. I removed the back cover of the phone, now i have full signal. What can it be?! I`ve looked every square inch of the cover and nothing seems to be "wrong" ..

cristiann1 said:
Ok, the best / weirdest thing happened. I removed the back cover of the phone, now i have full signal. What can it be?! I`ve looked every square inch of the cover and nothing seems to be "wrong" ..
Click to expand...
Click to collapse
Dunno. If you put the cover back on and it works... Maybe a fluke.
If it doesn't work with the cover on, then it's either a weak antenna, or the cover is putting pressure on something, causing a short.

[Q] Your sim card does not allow a connection to the network

I have a moto X 1st gen here in India. Its unlocked,not rooted. One fine day it thrower me an error "your sim card does not allow a connection to a network". And I am without network in my mobile.
My IMEI is same as in the battery
Device is not rooted
Sim card works fine in other mobiles
Tried different sim cards but still same problem
Didn't fiddled with any network settings.
After reading through XDA threads I did
Cleared data/cache
Restored the stock firmware again.
Did that network menu reset to switch radio on and off many times
Not able to get any network signal at all. Is there anything I am missing?

Attached screenshot from *#*#4636#*#* menu

sign in to network weird issue

So i changed my sim card and since then im getting an error with the new activated sim card, everytime im turning the data plan notification comes "sign in to the network" and when i touch it, it just takes me to some unreachable page from pervious carrier.
things ive done:
network reset
APN setting
changing 4g to 3g etc
airplane mode on off
chaning networn setting
factory reset!!!
hard reset
google stock unrooted rom!
changing sim cards and still get the notification bar!
please assist me.

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?

TMobile Signal Issues Android 9 Pie

I wanted to see if anyone else had issues with their signal for tmobile and after updating to android 9. I am running into an issue where for a few days I would have LTE 4G signal but at some point, I would lose signal completely. This issue persists once every one to two weeks. Here are the steps I did to see if it would resolve the issue:
- Reset Network Settings
- Reconfigured the date & time so it would be the correct time and date and timezone
- Removed automatic set date and time
- Did both a soft and hard reset
- Cleaned out system cache
- Booted into safe mode
- Checked the service hidden menu and ran tests and all came out pass
- Reset Access Point Names
- Ran Search Networks in Network Operators Menu and failed
- Ran Select Automatically in Network Operators Menu and failed
This issue has been annoying ever since I updated to Android 9. If anyone has a solution please advise. My phone is not rooted and is stocked image.

I'm on Tmo and received the pie update some months ago. I haven't had any issues with signal strength since. I'm racking my brain trying to come up with some advice but wow you have some everything I can think of. How about trying a new SIM card?

Medevac1 said:
I'm on Tmo and received the pie update some months ago. I haven't had any issues with signal strength since. I'm racking my brain trying to come up with some advice but wow you have some everything I can think of. How about trying a new SIM card?
Click to expand...
Click to collapse
I actually did replace the SIM card. Here is the weird thing... When I removed my sim card, I would get the icon showing that there is no sim card inserted so of course no signal was showing. After inserting the new sim card, the phone would see and recognize the sim card but still no signal bars would be showing.

KieKazami said:
I actually did replace the SIM card. Here is the weird thing... When I removed my sim card, I would get the icon showing that there is no sim card inserted so of course no signal was showing. After inserting the new sim card, the phone would see and recognize the sim card but still no signal bars would be showing.
Click to expand...
Click to collapse
Turn on Roaming?

Ainz_Ooal_Gown said:
Turn on Roaming?
Click to expand...
Click to collapse
Roaming has been turned on and off then on again yet same results with signal being lost.

KieKazami said:
Roaming has been turned on and off then on again yet same results with signal being lost.
Click to expand...
Click to collapse
Download this app, "LTE Discovery" https://play.google.com/store/apps/details?id=net.simplyadvanced.ltediscovery
There's a feature that logs your LTE data, wait till you lose signal again and then review the logs.