Calling issues

[hyukmin]

I'm out and about lately and when I call someone I can't hear them but they can hear me sometimes it is a bad issue please can someone help I have checked the microphone and speakers they are all fine

[Robin999]

Hi, and welcome to the UK community.

Is your network signal good when you're out and about?

[hyukmin]

I get around 1 to 2 bars of signal
I'm with O2

[Robin999]

I'm with O2, aswell, and not the best in certain areas. Remove your SIM card and give the contacts a quick clean. Speak to O2 as well in case there's issues at their end.

[BandOfBrothers]

It does sound like Network Congestion @hyukmin 

As a process of elimination can you try your sim card in another phone and then see what happens. 

You can reset the network in your phone via Settings > General Management > Reset > Reset Network Connections. 

If i can be of any further help please don't hesitate to ask  😎