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release it, while “hold a key” means to press the key for at least two
seconds and then release it.
Interface icons
SIM1_Signal strength
SIM2_Signal strength
Missed call
Headset
Alarm clock set
Silent
Outdoor
General
Battery status
Meeting
SIM1_New SMS
SIM2_New SMS
Battery
The lithium ion battery of the mobile phone can be immediately used
after unpacking.