Will I lose my SMS when I return to the factory?

Restore factory settings. The text messages and phone numbers stored in the mobile phone will be lost.

Restore the factory settings to restore the personality settings of the equipment or instrument to the factory default state, such as startup interface, standby mode, operation shortcut keys, and regular reminders. Restore to factory settings without deleting the stored data.

Formatting is to delete everything in the partition and restore the factory settings. Be careful in operation. Formatting will empty the saved data and back it up before formatting.

Generally speaking, there are three ways to format mobile phones by expanding data (remember to back up the data you want before you grid, and so on). ):

1. software formatting: use the software sTools of psiloc company to format the mobile phone with the lock code of 12345 (Samsung smartphones usually have the default lock code of 000000 or 0000000). This method will not lose the second line.

2. Soft cell: After entering *#7370# on the mobile phone, the lock code is required. The initial password is 12345 (Samsung smartphones usually have a default lock code of 000000 or 0000000). If you have modified the password of your mobile phone, it is the modified password (not the password of the SIM card), and then a white screen appears, showing only the words Nokia, 2. Line 2 may be lost.

3. Hard grid: Turn off the power first, then press and hold the dial key, "*" key and "3" key when turning on the power, and turn on the power until the word "NOKIA" appears (no key can be released during this process). Wait a few seconds until "Formatting .../.../"appears, then you can release the button above. After a few minutes, the system is formatted and the phone automatically restarts to enter the standby screen. Line 2 will be lost.

S60V5 mobile phones (such as 5800, 5230, etc. ) Hard grid operation is: press and hold the green dial key, the red on-hook key and the camera shutter key when turning off the phone, and then press the power switch until the Nokia screen appears.

Attention should be paid to the above lattice machine: keep the power absolutely sufficient, and don't try to turn it off halfway, otherwise it will bring unnecessary trouble! General software is the first step! The word "Format .../"will not appear in the third edition of s60, which will not affect the formatting effect.

References:

Mobile phone formatting _ Baidu Encyclopedia