Sony Ericsson D750i User Guide - Page 84

Troubleshooting Master reset The changes that you have made to settings and the content that you have added or edited, will be deleted. • If you select Reset settings, the changes that you have made to settings will be deleted. • If you select Reset all, in addition to your changes to settings, all contacts, messages, personal data, and content that you have downloaded, received or edited will also be deleted. To reset the phone 1 } Settings } the General tab } Master reset. 2 } Reset settings or } Reset all. 3 } Yes to continue. 4 Enter the phone lock code (0000 or the new code if you have changed it) } OK. If you select Reset all, content such as melodies and pictures that you have downloaded, received or edited is also deleted. Error messages Insert SIM Possible cause: There is no SIM card in the phone or you may have inserted it incorrectly. Solution: Insert a SIM card. % 5 To insert SIM card and battery. Possible cause: The SIM card connectors need cleaning. Solution: Remove the SIM card and clean it. Also check that the card is not damaged in a way that may prevent connection to the phone connectors. In that case, contact your network operator for a new SIM card. Insert correct SIM card Possible cause: The phone is set to work only with certain SIM cards. Solution: Check if you are using the correct operator SIM card for your phone. 84 This is the Internet version of the user's guide. © Print only for private use.