Telephone
When the device is locked, calls may be possible to the official emergency number programmed into your device.
To make and receive calls, the device must be switched on, the device must have a valid SIM card installed, and you must be
located in a service area of the cellular network. The GPRS connection is put on hold during voice calls unless the network
supports dual transfer mode or you have a USIM card and are within the coverage of a UMTS network.