Getting started
Basic use
Calls and contacts
Messaging
Apps and media
Connectivity
Specifications
Cause 1 of 12: The phone is overloaded for unknown causes
If your phone is overloaded, you can't make any calls. It may help restarting it.
Solution: Restart your phone.
Restart your phone
Press On/Off.
Simultaneously, press and hold the lower part of the Volume key and keep them both pressed until your phone restarts.
Or choose...