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Serious reception problems

I'm experiencing reception problems with my phone. The first two weeks this was not a problem but end of last week and yesterday and today I'm having troubles with the phone. I have between 2-5 bars (average 3) when talking and I'm always calling from the exact same location and same room (working from home).
The problem is that after a few minutes I can't hear the other person. The person calling me can hear me without problems but I can't hear him. So I hang up, call back and the same happens after a few minutes.
I have tried with and without headset and also tried to soft reset it without result. Any ideas what to do? Anyone else experiencing the same problem?

Laban said:
Any ideas what to do? Anyone else experiencing the same problem?
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No idea sorry! But I don't have that problem. Do u have a SIM card from another provider to check?

Mar'Cel said:
No idea sorry! But I don't have that problem. Do u have a SIM card from another provider to check?
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Yes, I might be able to try that or I'll try to get it replaced. Looks like no one else is experiencing the same.

I to am having some serious Reception issues but im with Optus in Australia. When on 3G at home.. cant make or take calls. So i have turned it to just GSM so i can get calls and make them.. Sometimes I did get calls and messages on 3G at home.. but today, it just wouldnt do anything..
There are updates from other counties which seem to have a radio update.
http://forum.xda-developers.com/showthread.php?t=514092&page=1

Hi,
Is there any way just to extract the Radio upgrade ?
I have my Diamond 2 in french, and want to keep it like that.
I wrote to the french HTC Support, and they just ask me to :
- Hard reset the phone : Done and useless
- Change the sim card : not done as the sim card I used is completely new
- Disable encryption : disabled and useless....
So the only solution will be a radio upgrade only.
Thanks
F.

Nor recovering from lost signal

Hi All
I got my Xperia XP for about a month and noticed my phone sometimes does not recover (restore) from lost signal. Further details:
1) Usually happens after bluetooth device connection
2) I did replace a new SIM card but same
3) SIM1 is set to be my default SIM card. When it happens, SIM1 shows no signal but never restores (I once tried to wait for 30mins and took the phone for different locations and still never restores). At that time SIM2 appears to have normal signal, but when I make call from SIM2, SIM2 signal drops to zero immediately and fails to make call.
4) Quick solution is to turn on/off the plane mode or restart
I believe this is a bug and wonder if anyone here has experienced the same?
Thanks - this is very annoying as I will miss important calls while I thought the phone was working.
Ken

Just want to tell you I got the same issue. wanna know from anyone who got the same issue please speak out!!!!!!

Have no this issue. But I've full flashed with all wipes via flashtool.

Desperanto86 said:
Have no this issue. But I've full flashed with all wipes via flashtool.
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Hi Thanks for the advice. I tried but the condition remains.

Losing mobile network, strange problem

I bought a 2nd hand Z3 Compact recently and it seemed to work fine. But I noticed after a day or two that it was dropping the mobile network. When it happens I get only ”Only emergency calls” and no bars for signal in the status field.
I've noticed the net disappears after I've made a call or two (rarely can do 2 calls in a row). As soon as I hang up, the net drops.
If I restart it might work again, or if I shut down the phone and start it after a while, also sometimes when removing SIM card and putting it back in again.
I can send SMS/texts and surf as long as I don't call or recieve calls, then the net is gone as soon as I hang up.
Anyone knows why this problem occurs?
Software problem? I have done a factory reset but it's still the same.
Would anything change if I downgrade and root?
Hardware problem?
How do I go about to troubleshoot this, both software and hardware?
It's a D5803, 23.5.A.1.291, Android 6.0.1
The SIM card is new, I have tried it in an older phone with a SIM adapter and it works. Though the older phone uses only 3G.
Grateful for answers!

Note 9 WiFi Calling - can`t make calls but receiving works.

Hi there.
I have Note 9 without any brand. Updated to newest firmware that existed and about two updates ago there was problem - i cant make any calls. Restarts one helps, and other time don`t help at all. And now - it was no use to restart phone because of this problem. I felt that it might be this problem and i turned off this option and tried to make call - and nothing. Only when i restarted phone again - i can make phone calls normally like before. This problem exists not everytime, it looks like when i make call to my second phone it is only "connecting..." at my note9, and other phone is ringing. And there is two kind of behavior, first - in note i cant hear anything, just this "connecting..." message, and other phone after few seconds hangs up and ask about reconnect. And second - after few seconds after receiving call it finally works but it have take some time between receiving call at second phone and hearing anything. Its lottery.
Now i have this option disabled, phone is restarted and now i can make calls. I contacted Samsung via chat (samsung members app) and via Twitter and they said to me to go to their service to diagnose or sth, but i know what i will hear at service: "please reset your phone to factory settings and if then this issue will be present we will take your phone and try to repair it" but i don`t want to do this because of all this configuration and hours of clicking... I dont like to do this when i dont have to.
So my question - do you have similar or the same problem? Is WiFi calling have anything to do with sim provider?

DeVilio said:
Hi there.
I have Note 9 without any brand. Updated to newest firmware that existed and about two updates ago there was problem - i cant make any calls. Restarts one helps, and other time don`t help at all. And now - it was no use to restart phone because of this problem. I felt that it might be this problem and i turned off this option and tried to make call - and nothing. Only when i restarted phone again - i can make phone calls normally like before. This problem exists not everytime, it looks like when i make call to my second phone it is only "connecting..." at my note9, and other phone is ringing. And there is two kind of behavior, first - in note i cant hear anything, just this "connecting..." message, and other phone after few seconds hangs up and ask about reconnect. And second - after few seconds after receiving call it finally works but it have take some time between receiving call at second phone and hearing anything. Its lottery.
Now i have this option disabled, phone is restarted and now i can make calls. I contacted Samsung via chat (samsung members app) and via Twitter and they said to me to go to their service to diagnose or sth, but i know what i will hear at service: "please reset your phone to factory settings and if then this issue will be present we will take your phone and try to repair it" but i don`t want to do this because of all this configuration and hours of clicking... I dont like to do this when i dont have to.
So my question - do you have similar or the same problem? Is WiFi calling have anything to do with sim provider?
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Well need a few things to be able to help.
Carrier?
Model? I'm guessing N960I1?
What is the firmware version you're on?

Jammol said:
Well need a few things to be able to help.
Carrier?
Model? I'm guessing N960I1?
What is the firmware version you're on?
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Carrier - Poland, Play but not branded phone , model - SM-N960F, FW version N960FXXS2CSD2/N960FOXM2CSA7/N960FXXS2CSD1

DeVilio said:
Carrier - Poland, Play but not branded phone , model - SM-N960F, FW version N960FXXS2CSD2/N960FOXM2CSA7/N960FXXS2CSD1
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And I'm assuming the carrier Support Wi-Fi calling right? It may be a provisioning issue. You should try contacting your carrier and verify Wi-Fi calling is a feature and that they support it on your device. They should also be able to help you activate it if they support it.

I wrote that it was working normally before, and now it stops. I`ve had this thing working.

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
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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