Verykool s5016 - Manual (Page 20)

verykool s5016 20 20
Use only compatible memory cards approved by with this
device. Incompatible memory cards may damage the card or
the device will corrupt the data stored in the card.
4.3 Unlock the Phone
You may need to provide Slide, Pattern, PIN, Password to
unlock your phone.
To unlock the screen:
 Press the power key to wake up the phone.