Blackberry 6710 Getting Started Manual page 40

Getting started
3. Lift the right side of the holder to open it. If your SIM card is
attached to a larger carrier, carefully break the card out of its
carrier. Both the SIM card and the base of the SIM card holder
have a notch on the corner.
4. Slide the SIM card into the card holder so the notches align
when the card holder is closed.
40
Unlocking the SIM card holder
Open SIM card holder
BlackBerry Wireless Handheld