Sony Xperia Z5

Sony Xperia Z5

Android 5.1.1

I can't make voice calls on my Sony Xperia Z5 Android 5.1.1

Cause 1 of 4: There's a connection error

If your phone doesn't receive any calls when someone calls you, it may be caused by an unknown connection error.

Solution: Restart your phone.

Step 1 of 2

Restart your phone

Press and hold On/Off.

Step 2 of 2

Restart your phone

Simultaneously, press and hold the upper part of the Volume key until your phone is turned off.
Turn on your phone again.

1 Restart your phone

Press and hold On/Off.
Simultaneously, press and hold the upper part of the Volume key until your phone is turned off.
Turn on your phone again.