Sharp O2 - Manual (Page 11)

Getting Started 10
Inserting the SIM Card and the
Battery
1. Slide off the battery cover.
2. Slide the SIM lock lever to the left.
3. Position the SIM card with the gold contacts facing
down, and slide the SIM into the SIM holder.
4. Slide the SIM lock lever to the right until the SIM is
locked.
SIM lock lever
SIM card