Can't make international calls in Nexus 4 - settings problem?

[AC Question]

Hi all,


I noticed a problem in my Nexus 4 - cannot make international calls (I dial the number, and then I immediately receive a "call ended" message without even a dial sound). No problem with local calls. I checked with my mobile provider and international calls provider and I'm open in their systems to dial internationally - so it must be something in the Nexus 4 settings - can anyone help? What should I change in my settings?


Thanks!