You can't make voice calls - Samsung Galaxy S Plus
Cause 2 of 11: Caller Line Identity hasn't been turned on in your price plan and you're trying to make a call with your caller identification shown when roaming
If Caller Line Identity hasn't been turned on in your price plan and you're trying to make a call with your caller identification shown, your call won't go through when roaming.
Solution: Turn off your own caller identification.