Turning on voice roaming may incur roaming charges.
For specific information on using your phone while traveling internationally, access the International Trip Planner then click the Get Started button.
From the Home screen, navigate: Settings > Cellular > Cellular Data Options.
Tap the Voice Roaming switch to turn on or off .
Voice Roaming must be on for the Data Roaming and International CDMA options to be available.
Tap the International CDMA switch to turn on or off.
CDMA is the primary wireless technology that Verizon Wireless uses to place and receive calls within the US and some global destinations.
Turning off International CDMA while in another country may improve poor messaging or data performance.