Why does my Nokia 5230 automatically open the address book, SMS and clock as soon as it is turned on? Guys, who can help me?

There is something wrong with the system, or it is poisoned.

Suggest a lattice machine. Two methods;

1' soft cell: password input is required for standby input *#7370# 12345 (system default password).

2 Hard Grid: Press and hold the dial key and the on-hook key at the same time when the phone is turned off, and then press the on key without releasing the camera key (it will not be released until the main interface appears after the phone is turned on).

The function of hard grid and soft grid is the same, that is, restore the mobile phone to the appearance state and pay attention to backup.