Verykool SL4500 - Manual (Page 7)

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Key Description
Back Key
In the menu mode, press the key to go back to
upper menu.
Volume Key
To adjust incoming call ringtone volume.
During a call, while playing music, video, or
listening to radio, press the keys to adjust volume.
Start to Use
Install Memory Card, SIM Card and Battery
When you apply for a network, you will get a plug-in SIM card. SIM
(Subscriber Identity Module) card that contains the phone number
and service projects, and can be used to store phone numbers and
personal information.
Attention: Do not bend or scratch SIM card, do not let it contact with
static electricity, dust or water.
Keep all SIM cards where children cannot touch.
Note: Keep the SIM card chip contacts face downward. Make the
SIM card fits card slot.