Verykool R13 - Manual (Page 12)

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removing the SIM card. Inserting or removing
the SIM card is absolutely prohibited when the
external power supply is connected, otherwise
SIM card and mobile phone may be damaged.
1.2.1 Insertion of SIM card
 Power off the mobile phone, remove the rear
cover and battery.
 Insert the SIM card correctly in the card slot;
finally install the rear cover and battery of the
mobile phone.
1.2.2 Unlock the SIM card
In order to prevent illegal use, SIM card adopts
PIN code (personal identification code) encryption
protection.
If this function is selected, PIN code should be
input correctly each time when you power on the
mobile phone, thus to unlock the SIM card for
normal use. Users can disarm the SIM card
protection but illegal use of the SIM card cannot
be prevented.
If the PIN code input is error for three consecutive
times, your SIM card will be locked by the network.
The mobile phone will enquire the PUK code
which will be provided by your network operator. If
the PUK code input is wrong for 10 times, the SIM