1 Turn on the phone
Press Disconnect until the phone is turned on.
2 Enter PIN
Key in the PIN and press Enter.
3 SIM card rejected
If the SIM card is not accepted or an error message is displayed, it may be a faulty SIM card or a faulty SIM card reader. It is also possible that the phone is locked to another operator. Contact this operator for further information.
![BlackBerry 9800 Slider BlackBerry 9800 Slider](http://wmstatic.global.ssl.fastly.net/ml/7290921-1450271.png?width=480&height=480)
4 Turn off the phone
Press and hold Disconnect until the phone is turned off.