How To Unlock Sharp:

Model:  All Sharp

1. From front screen, enter *01763*6371#
2. The handset will reset back to the main screen
3. Press M button
4. Scroll to Settings and press Select
5. Scroll to Security and press Select
6. Scroll to MEP locks and press Select
7. Enter your Handset Code (the default code is 0000) and press OK
8. Scroll to Network and press Select
9. Scroll to Deactivate and press Select
10. Enter Unlock Code and press OK
11. Handset should then display DONE and be unlocked.

Model:  Other Models

1. Enter Non authorized sim card and enter code.