Samsung GALAXY S4 User Manual page 128

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Try manually selecting another network. Information for selecting networks can be found in the
phone guide.
If neither of these actions resolves your issue, you will need to contact your wireless service provider.
When calling to report an issue, the following information will be beneficial in trying to resolve your issue
as quickly as possible:
Your wireless phone number.
The city and country you are travelling in.
Any error message that displays on your phone or that you heard when trying to place a call.
If the issue is with data, were you able to place voice calls?
If the issue is with voice service, were you able to access data?
Sprint Worldwide Wireless Service
127

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