关于恢复出厂，可以尝试：
Step 1 Press the Menu button.
Step 2 Use the Navigation button to select Settings.
Step 3 Use the Navigation button to select Network Configuration.
Step 4 Perform one of the following procedures:
Procedure A:
- Press **2. The phone displays "Do you want to reset all system settings to default
values?"
- Press the Yes softkey.
Procedure B:
- Press **#. If your phone displays "Enter Admin Password," enter your password and then
press the Enter softkey. Make sure that an unlocked padlock icon appears in the
upper-right corner of your LCD.
- Scroll to Erase Configuration.
- Press the Yes softkey and then press the Save softkey.
The phone cycles through normal startup procedures.