mobile voice call - bad quality from my side only.

[Edytabi1]

I have 100% -80%4G signal  and recently changed phone to GalxyS20+. Why are voice calls indoors  bad that nobody can here me properly, calls keep dropping and it sounds to the person on the other end of the line like I'm under water or my voice is braking up. I can hear everyone without problem at the same time. The issue started about 3 months ago and is getting worst. I had same issue with previous Huawei this is why I have switched to Samsung hopping this will solve the problem. Happens mostly inside of my house. I checked my postcode O2 signal states all options except 5G should work at it best. My son recently complained same issue. Please advice just keep in mind I have already reset phone number of times.

[Cleoriff · Accepted solution]

@Edytabi1 

Take a look at these guides

Guide: How can I sort out my network issues?and Guide: Is the network down for me or everyone? 

Or 

Give O2 a call on 202  or 0344 809 0202 (Contract) 4445 or 0344 809 222 (PAYG)

Or you can message O2 on Facebook ( https://o2uk.co/O2CFB) , Twitter ( https://o2uk.co/O2CTW) or Instagram ( https://o2uk.co/O2CIG), hopefully they should be able to help.

[Enlli]

When you are at home are you using WiFi Calling at all?