Sigma X-treme PQ28, User Manual

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2. Enter “*#06#” in the dial pad to query IMEI number.
Main Keys
Key Definition
HOME key Return to home screen
Task Manager
Key
Enter to Task Manager
Return key Return to the previous screen
Power key Turn on/off, sleep, wake up, long press
10 seconds to re-boot.
Volume Key Adjust the volume and press the
“volume” key on the camera interface to
photograph (No wake-up function).
Screen sleep and wake-up
1. To save the power and prevent the unexpected screen touch
from starting the program, or when cleaning the screen, press the
power key to enable the screen to sleep. Press the power key again
to wake up the screen.
2. To change the time when the mobile phone automatically
enter into the sleep mode, enter Set→Display→Sleep.