Huawei E5770 - Powering the Mobile WiFi On and Off

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Turning On the Mobile WiFi
Press and hold the button until the screen lights up, indicating that the Mobile WiFi is
turned on.
Note:
 Press and hold the button to turn off the Mobile WiFi.
 If the Mobile WiFi is malfunctioning, forcibly restart it by pressing and holding the
button for 14 seconds.