HTC One M9 - Manual (Page 108)

Using a roaming service may incur additional charges. Check with your mobile operator for rates
before using a roaming service.
Changing the default country code for Home dialing
1. From the Home screen, tap , and then tap Settings > Call.
2. Tap Home dialing settings.
3. Select a country, and then tap OK.
Turning off Home dialing
If you prefer to manually enter complete phone numbers to call while roaming, you can turn off
Home dialing.
1. From the Home screen, tap , and then tap Settings > Call.
2. Clear the Home dialing option.
108 Video chat and phone calls