on March 27 2022 i did updates for my mobile S21 Ultra - Dual SIM card and noticed since that time the connection is really poor.
Whenever i call anyone suddenly the phone line cut. or i can hear people voice and they cannot hear me
I want to call to someone. Message appear that stating "network is not found"
the internet connection always is discount
I have change the two sim to my other phone S9 plus. I did not face the above issues.
Please assist on this matter
