3.Press 
to place the call.
Note: Some countries require additional dialing steps for calling a mobile number; you will need to verify you are dialing the number the same as you would from a wireline phone in that country.
Important: Always check the local requirements for placing emergency calls. When traveling in GSM locations, the emergency number is 112. In CDMA mode, the emergency number will vary by country. Emergency 911 (E911) location services are not available when roaming internationally.
Sprint Voicemail Service
Your Sprint voicemail will follow you as you travel. All of your unanswered calls will be forwarded to your Sprint voicemail. You will need to be sure your voicemail box is already set up and that you know your voicemail password.
Note: In India, Sprint voicemail is not available while roaming on the GSM network; it does work while on the CDMA network.
36 Sprint Worldwide Wireless Service