17Warning: With the flight profile you cannot make or receive any calls, includingemergency calls, or use other features that require network coverage. To make calls,you must first activate the phone function by changing profiles. If the device hasbeen locked, enter the lock code. If you need to make an emergency call while thedevice is locked and in the flight profile, you may be also able to enter an officialemergency number programmed in your device in the lock code field and select'Call'. The device will confirm that you are about to exit flight profile to start anemergency call.■ Keypad lock (keyguard)To prevent accidental keypresses, select Menu and press * within 3.5 seconds to lock the keypad.To unlock the keypad, select Unlock and press * within 1.5 seconds. If the security keyguardis activated, enter the security code if requestedTo answer a call when the keyguard is on, press the call key. When you end or decline the call,the keypad automatically locks.For Security keyguard, see “Phone,” p. 38.When the keyguard is on, calls may be possible to the official emergency number programmedinto your device.■ Functions without a SIM cardSeveral functions of your phone may be used without installing a SIM card (for example, datatransfer with a compatible PC or other compatible device). Some functions appear dimmedin the menus and cannot be used.3. Call functionsYour phone can make and receive calls using a cellular mobile phone network or a wirelesslocal area network (WLAN), also called Wi-Fi (Wireless Fidelity), for voice calls over theinternet. See “WLAN/Wi-Fi,” p. 30.■ Make a voice call1. Enter the phone number, including the area code.For international calls, press * twice for the international prefix (the + character replacesthe international access code), enter the country code, the area code without the leading 0,if necessary, and the phone number.2. To call the number, press the call key.To increase or decrease the volume during a call, press the volume keys.3. To end the call or to cancel the call attempt, press the end key, or close the phone.
