Will the data set by the mobile phone factory be lost?

Restore the factory settings, and the data of the mobile phone will be cleared.

When leaving the factory, restore the factory settings to the default state, such as startup interface, standby mode, operation shortcut keys, timing reminder and other functions, and clear the saved parameter settings.

Nowadays, the styles of mobile phone systems are diverse, and some basic setting functions can't be found for users who don't use them often. Usually, restoring the factory settings of the mobile phone is generally to format the mobile phone. If the phone is formatted, it will not retain the original software and materials. Therefore, if you want to restore the factory settings, it is recommended to save the backup information first, especially the address book and SMS.

Extended data:

Restore factory settings. Restore some settings of ringtone, theme, scene mode, alarm clock and font to the factory state. The contents in the memory card (such as downloaded application) or SIM card (such as SMS) will not be deleted.

Restoring the factory settings will reduce the system version of the phone. Generally, we will upgrade the system after using it, so restoring the factory will generally reduce the version of our mobile phone. The software in the phone will be deleted. After the factory settings are restored, the software (except system software) on the mobile phone will be deleted.

All files of the mobile phone will be deleted, except some system files that come with the mobile phone, and all subsequent files of the mobile phone will be deleted. We will delete the address book of the mobile phone, we will lose many important contact numbers, we will reset all system settings, and all system settings we have made for the mobile phone system will be reset.

References:

Factory Settings-Baidu Encyclopedia