Database Develop

Suddenly impossible receive and make calls in 4g

Suddenly yesterday I started to have problem making call only when 4g is active. The strange think is that I can send and receive sms, surf the web with the 4g connection but cant't make or receive calls. The phone get locked in waiting and after I click close call the phone application seems to get blocked and unresponsive.
My operator says there is no network problem.
If I switch to decks and gsm mode only, the problems vanish.
What I can do? I'm stock with android 4.4.3

[Q] Mi3 use in USA problems

I recently got a mi3 from china, and using it in the US. I use AT&T and am only able to connect to edge network for data usage for some reason. That's my first problem.
Second, I'm not able to receive incoming calls. I can send outgoing calls which works fine, but when someone calls me, my phone doesn't receive it at all. Why is that, and how can I fix it?
Third, my location services doesn't work. Even though its turned on in the settings.
Keep in mind that I'm a newbie at all of this, so thank you for hopefully answering my questions!

Htc Deire 626s Possibly Hacked/Can't make or receive calls

Hello,
I need help diagnosing whats going on with my HTC desire 626s. The phone is unlocked, rooted, and has TWRP installed.
Problem: I can't make calls while I'm at my home. I have excellent signal strength being I'm within visual range of the cell tower.
The phone has always worked at my home in the past then about a two months ago I wasn't able to make or receive calls. The internet works fine, and texting works fine. When I try to make a call nothing happens then there is a beep and the phone says call ended. This is an unlocked phone on att go phone service. After this issue started I called att and created several trouble tickets and every time they state the service is working fine. When the phone was working normally during calls the 4gLTE indicator would swap to 4G and make calls on an hspa network. After att was unable to fix the issue I bought a new sim card. For a month I was able to make calls just fine but then on Halloween night the problem came back. I highly suspect that someone is blocking my ability to make and receive calls. I need help from someone that knows more than me on how to diagnose exactly why the calls are not goign thru. I really need help. I have swapped the sim card into a new phone was able to make a call or two then the service was again unable to make or receive calls. I just need help on how to diagnose exactly whats stopping the calls from going thru. Thank you.
PS. Another att go phone works in the same location that mine does not so it is not a issue of the walls blocking the signal.

Problem with the signal

Hello, I tried several roms and I had problems with the signal, every time someone wanted to call my phone I could not, it's like if my phone was off or I was in airplane mode. The only solution was to restart my phone and only the signal worked for a few minutes and nobody could communicate. Only happened to me with calls, I had mobile data and could receive messages, I just could not receive calls, or make calls, I got an error in the network. I went back to stock and I do not have that calling problem

Question Unable to receive calls.

my mobile show signal, but not unable to receive calls.
When I restart the mobile or make a call then for 10 or 15 minutes it receive calls but after that my mobile not receive any call and caller notified that number is not responding.
i had done a factory reset but no solution.
when i did on off mobile, on off sim, or airplane mode , it start receiving calls but after some time it dose not receive calls.
some time it shows SIM 2 disconnected.
any one help me is it software issue or hardware??

asifali_eng said:
my mobile show signal, but not unable to receive calls.
When I restart the mobile or make a call then for 10 or 15 minutes it receive calls but after that my mobile not receive any call and caller notified that number is not responding.
i had done a factory reset but no solution.
when i did on off mobile, on off sim, or airplane mode , it start receiving calls but after some time it dose not receive calls.
some time it shows SIM 2 disconnected.
any one help me is it software issue or hardware??
Click to expand...
Click to collapse
take it to warranty, arepair shop or call your carrier to discard a network issue

asifali_eng said:
my mobile show signal, but not unable to receive calls.
When I restart the mobile or make a call then for 10 or 15 minutes it receive calls but after that my mobile not receive any call and caller notified that number is not responding.
i had done a factory reset but no solution.
when i did on off mobile, on off sim, or airplane mode , it start receiving calls but after some time it dose not receive calls.
some time it shows SIM 2 disconnected.
any one help me is it software issue or hardware??
Click to expand...
Click to collapse
Format data and refresh official firmware from beginning. Make a backup of important files first.