no incoming calls - HTC One A9

Hey guys i have issue i cant get incoming calls but outgoing call is ok friends can't call me, i disabled divert and contacted my carrier they said sim have no problem but the issue is with your phone. I formatted it two times still no luck
Best Regards
Any suggest?

Are you running CyanogenMod 13 or any other ROM with LTE enabled? That might be the problem custom ROMs have trouble sometimes with VOLTE, try setting it to 3G and test it out

This thing really helped me . Go to setting , press network and there you will see Volt HD calls just simply uncheck this one and now you will receive calls . ENJOY

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Can't make calls..

I just rooted my phone and updated it with CM 10 and the problem i am facing is i can't make calls sometimes. When i call someone ultimate disturbance occurs(alien type voice) and when some one calls me i can't get their calls but i can see their missed calls in the call log . The topmost issue is that i can't call to customer care either. Please Help.
affan4881 said:
I just rooted my phone and updated it with CM 10 and the problem i am facing is i can't make calls sometimes. When i call someone ultimate disturbance occurs(alien type voice) and when some one calls me i can't get their calls but i can see their missed calls in the call log . The topmost issue is that i can't call to customer care either. Please Help.
Click to expand...
Click to collapse
That is a known bug on 4.1.2 and 4.2.2 ROMs. Changing the Data mode from 3g to 2g seems to solve the issue.
Till date no fix on that yet.
Red Devil said:
That is a known bug on 4.1.2 and 4.2.2 ROMs. Changing the Data mode from 3g to 2g seems to solve the issue.
Till date no fix on that yet.
Click to expand...
Click to collapse
So i wont be able to use 3g data then?

Can't receive calls!

Greetings all,
i am having a weird problem with the latest updates of the 4.4.4 / 3.0.16 Sultan ROM, im a big fan of Sultan so i pretty much tested all his ROM updates and all and i never had a issue like this.
The problem is i can't receive calls / text messages , but i can make calls / send messages , and everything else works perfectly.
I have tested my SIM on another phone and i was able to receive calls so it is not a SIM problem , i just did a full wipe and reflashed all and i am having the exact same issue.
Any suggestions? Anyone that had the same problem? Anything would help.
Could it be my phone? But why can i call someone but they can't me?
thank you
Ok i found out what the problem is , network type was set to: WCDMA preferred , and after setting to GSM Only i can now receive calls and messages, but after rebooting the device it switches back to WCDMA preferred.
And i do not know why it stopped working out of nowhere , maybe its cause of my carrier.. :/

Wifi blocks incoming calls and sms!! - BUG????

Hi
Im having a strange issue that i only just noticed and was wondering if others are having the same problem.
It seems when i am connected to either 5ghz wifi AC or Wifi 2.5gz N,
My phone refuses to accept incoming calls, will call out just fine but will not let me receive.
when I turn wifi off calls come through OK, Just wondering if there is someone who can help.
Update - I have re-flashed both kernel to stock - same wifi being on blocks incoming calls.
I have re-flashed the ROM - again, same issue Wifi seems to interfere with incoming calls and sms. -- Will not receive anything until I disable wifi??
I have also just booted into Safe Mode and the same problem still exists - Wifi is blocking incoming calls, but i can send sms and calls while being on wifi.
Is this a Bug!!! should I report this to CM - could some one else please try this process.
I have also checked and double checked my APN settings and they are correct.
Will do a complete factory reset and see if problem still exists.
UPDATE 2
This has to be a bug I have factory fastboot.zip'd back to XNPH22R
and the wifi bug is still there!
Thankyou in advance
I have the same problem, for which not received a call on the job.
How to solve it? help
I realised my APN settings it was also using 4g but my provider doesn't do 4g when set to 3g only my problems went away.
What Rom are you using? That would help.
Stay to the latest version of the rom
Sent from my One A0001 using Tapatalk
I changed the sim card and the network, the problem is solved.
Dealing with this issue on my AT&T LG G8 on T mobile.

Unable to receive calls

Hello,
I bought a mi mix 2s some time ago and it's currently running the china rom because I can't unlock the bootloader the next 10 days.
First of all I can call other people and I can use mobile data. Also I'm able to receive calls if the sim is in my old oneplus one.
Now to my problem:
Today I realized that there must be a problem if someone calls me but I couldn't really figure out under what circumstances the issue appears.
However, I could figure out the following:
If I'm on wifi calls work most of the time
If I'm on 4g I don't receive calls most of the time
If I'm on H+ I receive calls most of the time
If the phone is locked I either get the call or the mailbox answers
If I don't get the call there are two things that happen on the phone that is calling me:
If it's a samsung theres just one loud beep and the call ends
If it's a LG there are fast beeps (similar like if the phone is busy)
Thanks in advance for any help
Flatric
EDIT: Just figured out that the problem is that the phone takes too long to switch from 4g to 3g since VoLTE is not supported by my carrier... Found some guys in a forum who complained about the same problem but with a oneplus phone... I'm still open for any ideas that could fix that Maybe someone from germany here who uses O2/Eplus network and got the same problem?
EDIT2: http://en.miui.com/thread-935378-1-1.html Used this to enable VoLTE but can't test if it's working until tomorrow
Fixed it by the way by enabling VoLTE with the miui dialer code explained here

I can't make any normal call, but full network coverage, and internet 4G normal

Hi,
I have not been using my OP6 because of a strange issue with it since OOS 10.3.9 (maybe since May 2021)
This issue is: I can not make nor receive normal call with any provider. but my network bar is full and my 4G internet is running smoothly.
If I try to make a call, it just show the call screen, no calling tone and no waiting tone and the other phone doesn't ring.
If I try to call my OP6 from other phones, it just doesn't connect, no call tone no waiting tone... My OP6 also doesn't show any incoming call.
I'm sure my sim cards are OK, I have tried to put them in a different phone and they can make normal call.
If my sim card slots were broken, I would not have any coverage and my 4G wouldn't work...
I can receive SMS just fine.
anybody can help me?
thank you
I had the same issue, at the end oneplus said, bring it to a service center while there plenty or forum posts in their forums from technician saying it's the network chip, i got a new phone but will attempt to replace that chip once i got my replacement.
You could try other stuff, full wipe, other roms etc.

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