Enabling or disabling a SIM/USIM card:
You can install two SIM/USIM cards on your phone and use one or both of them at the same time. When you do not
need to use a SIM/USIM card, disable it.
Setting the default SIM/USIM card
You can set the default SIM/USIM card for some services, including mobile data, Calls and SMS messages. The default
card is then prioritized for the selected services.
2.1.4
Data usage
Your mobile phone will be automatically configured to use your network operator's 2G/3G service (if available) when
you turn on the phone for the first time. Note that the SIM card must be inserted.