Signal Strength; Emergency Call (Sos); Switching The Phone Off - Zte F188 User Manual

Signal strength

The signal strength is indicated in the top left corner of the display. More bars indicate a stronger signal.
Strong signal.
If the phone is not able to detect the designated network, or links to a network that you are not authorized
to use, the signal strength meter will show no bars. You will only be able to make emergency calls.

Emergency Call (SOS)

You can make an emergency call even if your phone is locked or cannot access your network, or if there is
no (U)SIM card inserted, as long as you are within range of a network of the type supported by your hone.
1. If there is no (U)SIM card loaded, press
2. Enter the emergency number, for example, 112 (the international emergency number).
3. Press or

Switching the phone off

Press and hold to turn the phone off.
(SOS).
(Call) to call.