Why does my phone keep hanging up when I try to make a phone call

[Android Central Question]

I've tried to call are almost every contact in my contact list and it rings twice and it just hangs up same with incoming calls

 

[B. Diddy]

Welcome to Android Central! Which phone and which carrier? Do you have a strong signal when this happens? Can other people call you without difficulty?

Please register on this forum, which will allow you to engage in discussion more easily, as well as post images. https://forums.androidcentral.com/ask-question/409154-join-android-central-community.html