Dynamics Hong Kong Limited GRAVITYPRO User Manual
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2.3.3 Unlock SIM Card
In order to prevent illegal use, SIM card using PIN1 (Personal Identification Number) code
encrypt protection. Elected to use the function, every time you must enter PIN1 code
when the phone is switched on, so that you can unlock the SIM card, and then send or
receive the call.
Press the ON / OFF key to boot the phone; enter PIN1 code, press
to clear the