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Unable to make a call in GSM network - works in 3G

My TyTN II is no more than one month old. Radio and ROM are all stock and I never tried any custom ROMs nor did I install hardSPL on it. The problem is all of a sudden I can't make any calls. If I dial a number it just says Call Ended following with couple of silent beeps. If someone call me they got to my voicemail. The strange thing is that after couple of retries, it works, I can make a call but then after another try, it stops working again.
In all that time, sending and receiving SMS works normally.
And now the very strange part of the problem. If I switch to 3G mode, everything is ok. No problems at all. If I switich back to GSM only mode, the problem is back.
I've contacted HTC in my country (I'm somewhere in Europe ) and all they can say is, hard reset your phone and if that does not work, send it for repair.
I consider that a valid response and I'm about to do just that but before I go and erase all of my applications and settings from my phone (which will take me ages to get them back) I was wondering if someone has previous experiance with this sort of a problem and if it can be fixed without hard reseting the phone.

I have the same issue but when I turn G3 mode ON. I can not make call with auto G3 mode on (I have to try a lot of times to make a simple call). If I use only GSM its works ok.

Zol
I have the same problem, i cannot make a call on 3g network only on GSM. I took the phone to the service and they said i had to change the motherboard it costs ~335 EUR. F*ck
Can anybody tell me an alternative solution?

[Q] Weird voice call problem

Hi,
I have a really strange problem..
I've got my new HTC Incredible S one month ago, and everything was fine.
Recently, people were telling me that in the middle of a call, my voice turns out into a noisy voice!
I tried to make calls to my phone from another phone, and after few minutes, the voice really changed into a weird voice (really different than my own voice) plus a lot of background noise (it looks like the phone has switched to the voice cancellation mic instead of the regular mic).
During the call, when this problem happens and when I switch to headset or turn on the speaker phone, the problem is fixed. few minutes later, it comes back again.
I checked for viruses, no add-on or 3th party phone applications installed.
Shall I do a factory reset?
I don't wanna lose my apps, settings, contacts and data
Please help!!!

Same here.
Maybe this one helps:
http://forum.xda-developers.com/showthread.php?t=1081356
didn't try (couldn't try), because no root here....

My phone is not rooted neither.
Any solutions?
Have you tried to do a factory reset?
I don't think it's a hardware issue; because it's been working fine for one month with no trouble.

No, didn't try a factory reset.
And i also think, this is a software issue, but no clue what could be the reason for this behavior. Sometimes voice call just works fine and sometimes it doesn't...

Yeah same here. Sometimes It goes fine & sometimes not. I think I will do a factory reset soon and will let you know the result.
Sent from my HTC Incredible S using XDA App

Hi,
I did a factory reset (or what they call a Hard Reset).. the same problem still happening!
I event went to the telecom company, and they replaced my SIM card, but still the same
Any clues????
Could it be a defect handset ?

Now I just figured it out!
It was a problem with the GSM provider!!!
They told me to switch to 2G instead of 3G, and it really worked with no troubles.
I'm happy now that my phone has no defect

thanx. will try that. but do you know what exatly was the problem with the gsm?

I think the problem is in the GSM tower that is close to my house (this is what the communication company said).
My big brother has HTC Incredible S too, and when he switched to 3G, he suffered from exactly the same problem!!!
I don't think the two phones are defective; since we bought the first one from USA and the second from here.
Just try to force the phone to use 2G instead of 3G. you can do that from:
Settings >> Mobile & Networks >> Network Mode >> GSM only.
Selecting GSM only = 2G
Selecting WCDMA = 3G

Thanx again. I will give this a try

I had this problem once but after changing to 2G as u referred it worked just fine

There is widget on market called "2g-3g on off" for faster changing between these two modes. Very useful when you need 3g for faster web

aaaaaand. it seems to work. strange. unfortunately its 2g and not 3g....

Emergency Calls only on AT&T.

My Razr i has been working well for a long time but this morning, I noticed that it had the dreaded "emergency calls only" message.
I tried turning on airplane mode and then turning airplane mode off.
I tried restarting the phone
I tried taking out the sim card and putting it back in.
I tried wiping the Dalvik cache and fixing permissions.
None of this stuff fixed it.
The only thing I didn't try was restoring a backup but I haven't made a backup in a while and really really really really really don't want to because I hate losing my data and having to put everything back on.
Data works but calling and texting doesn't.
I have another AT&T phone (it's not a smartphone) that has service and functions the way it's supposed to. So it's not a problem with the tower.
Help?

Question S21 Ultra sometimes doesn't show that someone is calling me

Hello,
For many months I have had a strange problem with my S21 Ultra, namely it does not seem to show me at random times that someone is calling me, no matter if via the cellular network or some communicators, it simply does not show notifications that someone is calling no matter how is calling. I often have it that only when I pick up the phone, unlock it and check something on it, suddenly messages come that someone tried to communicate with me, and only from then on I can answer calls until I hang up the phone and in an hour or two the same problem - over and over again. I have such an impression as if the phone itself went into some hibernation after putting away, although I have no indications that something like this is happening, because everything looks normal. The phone has the latest update, and I have restarted it several times with no effect.
I would like to add that this happens both in an apartment where I have wifi turned on (I do not use lte calls), and when I am outside while walking in the city.
Is there something I can do to fix this?

This is a very strange issue indeed. Have you checked if your phone has cell coverage when the screen is off? Did you try calling yourself from another phone and number? If the answer is negative to either question, I would suggest resetting your network settings. If that fails, try a factory reset which should solve any issues. If the issue still persists, it could be hardware related and you might need to take the phone to Samsung centre to get it checked.

I don't have a second phone to call myself. Friends say that on their end it sounds like I am not answering the call (i.e. they have a call signal, but just nobody is answering). They have no busy or unavailable signal. What exactly do you mean by a network reset, what would I exactly have to do? I was thinking about a factory reset, but I'm afraid that I will lose all my data and application settings. I do not know if it matters, but I have been using this phone since the premiere of the S21 Ultra, and when I bought it, I transferred all data via the data migration service from the previous S10+ phone, to which a few years ago I similarly transferred data from the S9+, to which I transferred data from S8 + earlier

Maybe you have the "do not disturb" option on? When I have this on, I can't see who is calling me.

I checked, unfortunately it's not that, if it were, I would never see someone calling, but my problem seems to be random.

Sierra76 said:
I don't have a second phone to call myself. Friends say that on their end it sounds like I am not answering the call (i.e. they have a call signal, but just nobody is answering). They have no busy or unavailable signal. What exactly do you mean by a network reset, what would I exactly have to do? I was thinking about a factory reset, but I'm afraid that I will lose all my data and application settings. I do not know if it matters, but I have been using this phone since the premiere of the S21 Ultra, and when I bought it, I transferred all data via the data migration service from the previous S10+ phone, to which a few years ago I similarly transferred data from the S9+, to which I transferred data from S8 + earlier
Click to expand...
Click to collapse
u need to go to settings>general>reset and there tap reset network settings..

Hi,
I experience very similar problem. I tried to reset network settings, "hard" reset the phone, playing around different mobile network settings... nothing helps. I'm not sure if it is phone hibernation issue or kind of removal of the phone from cellular antenna.
I have another phone I use to watch this s21ultra issue. Practically each day it happens that the s21 ultra does not react to my call, of course most of the time it works properly, but there are some tries, when it fails. In such case on the phone I call from I get a message "user is not available". But then, leaving the s21ultra untouched for 10 minutes I get SMS saying that someone tried to contact me, so it is not obvious that the phone hibernated.
I was not able to reproduce the problem on the other sim card put in s21ultra (the carrier is different). I was not able to reproduce the problem on the other phone and the sim card from taken from s21ultra. In my opinion it is related to "weak" mobile signal and kind of "sensitivity" of s21ultra to low signal quality.
I reported the problem to my mobile network provider, but I'm still waiting for the answer. Anyway, I'm going to do the following:
- ask for sim card replacement (cheapest option),
- (if above does not help) go to samsung service and ask to check the phone - I hope they have some diagnostics tools,
- (if above does not help) install the second sim card (from different provider) and configure redirection of calls in case of "user unavailable" - I know it is "stupid" solution - but at least one of the carrier should work
- optionally root the phone - Can anyone confirm if it may help? At least I could enable toggling airplane mode each minute

Question 😠 SIM1 is dead after upgrading to UI 5.0

Hi,
After OTA to A13 (5DVJA) SIM 1 is dead most of the time.
People say they can't call me, they just leave a message.
I get a text message that somebody called me......
Never had this problem before.
Hard reset did not help.
Anyone else had this problem?

My S21 Ultra has issues, and both sim cards don't work anymore. I had to reset settings factory reset still no joy.
I left my sim in, and after several hrs, it started working!
I also set up wifi calling, which helped, and it activated the sims.
However, the reception has been extremely poor so something has been damaged by the update, I assume.

qwerty1q said:
Hi,
After OTA to A13 (5DVJA) SIM 1 is dead most of the time.
People say they can't call me, they just leave a message.
I get a text message that somebody called me......
Never had this problem before.
Hard reset did not help.
Anyone else had this problem?
Click to expand...
Click to collapse
Also, try resetting network settings

riz157 said:
My S21 Ultra has issues, and both sim cards don't work anymore. I had to reset settings factory reset still no joy.
I left my sim in, and after several hrs, it started working!
I also set up wifi calling, which helped, and it activated the sims.
However, the reception has been extremely poor so something has been damaged by the update, I assume.
Click to expand...
Click to collapse
It doesnt changes anything. Also Wifi calling is useless for me as nativ call recorded doesnt record call via wifi.

qwerty1q said:
It doesnt changes anything. Also Wifi calling is useless for me as nativ call recorded doesnt record call via wifi.
Click to expand...
Click to collapse
Wifi calling could fix the issue. Once done, you can turn off wifi calling.
Put the phone in aeroplane mode, then turn it off
Take sim tray out turn the phone off, insert sim tray then turn back on

others are reporting the same - you're definitely not alone
Nothing else works If under warranty, send to Samsung to repair

let me know if any of the solutions work