Verykool R623 - Manual (Page 7)

1 Start Using
1.1 Battery
Battery is attached with the phone. Please recharge it for use after
completely using up the battery for the first three times, which
makes this battery easier to achieve the best using state.
In actual use, the standby time and talk time of the phone varies
with the network status, working environment and different using
manners.
For install the battery, you should put the back of the phone
upward, push the rear cover, move the battery cover button to the
right for releasing the cover, and then take off the rear cover. Then
insert the battery in place. After install the rear cover, you should
move the battery cover button to the left for locking the cover.
1.2 SIM card
The SIM card is the key for accessing to the digital GSM network.
Prior to using the phone, you need to insert effective SIM card
in the phone.
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 phone, thus to unlock the SIM card for
normal use. Users can disarm the SIM card protection but illegal
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