The SIM card stores identifying user and network data, and it should be removed before any serious repair work is done on a device. This guide will show a user how to remove the SIM card after removing the battery.
With your thumb press down on the locking- button on the back of the BlackBerry 7280.
Slide the battery cover off the device.
Remove the lithium-ion battery from the back of the device using your index finger.
Hold the device with both hands.
Lift the SIM card holder using your thumb and index finger.
Remove the SIM card from the device.