HTC One M9 - Manual (Page 249)

Global Services 236
Note: The SIM included contains information specific to your phone and should be retained with the
phone for use on GSM networks.
Enable Global Roaming Mode
Your phone is designed to enter global roaming mode automatically when you activate your Sprint
Worldwide service, meaning that it should automatically connect to an appropriate CDMA/LTE
network or GSM/UMTS network when you travel. You may set global roaming options through the
settings menu.
You may also need to set your network mode options through the settings menu. See Set the
Communications Method for Global Use .
To enable your phone for international roaming:
1. With two fingers, swipe down from the status bar, and then tap > Mobile data > Roaming >
Automatic.
2. From Mobile network settings, tap the checkbox for International Voice.
3. With International Voice selected, tap the checkbox for International LTE Data.
To set your network mode options manually:
n
With two fingers, swipe down from the status bar, and then tap > Mobile data > Network
mode.
l
To allow connections to CDMA or LTE networks only, tap CDMA Only or LTE/CDMA.
l
To allow connections to GSM or UMTS networks only, tap GSM/UMTS Only.
To allow connections to available CDMA/LTE or GSM/UMTS networks, tap Automatic. This
is the recommended setting for international use.
Make and Receive Worldwide Calls
When traveling on international networks, you can place and answer calls as you would on the
Sprint network (see
Place and Answer Calls ), although some additional instructions may be
required to place a call. Some features and services are not available in all countries. For more
information on services that are available while roaming, visit
sprint.com/sww .
Make Calls Using Plus (+) Code Dialing
Placing calls from one country to another country is simple with the Plus (+) Code Dialing feature.
When placing international calls, you can use Plus Code Dialing to enter the appropriate
international access code for your location (for example, 011 for international calls placed from the
United States).
Note: Plus Code Dialing is only available when roaming internationally on GSM networks and on
certain CDMA networks in the United States, Canada, and the Caribbean.