If there is a custom recovery installed on the smartphone, user data will be saved when the settings are reset.
Failed to reset password by hard reset? Flashing your phone will save you both the password and all the data on your device. Perhaps this is the most effective way to reset your password on any mobile device, which in 100% of cases will help to solve the problem of a forgotten password. However, remember that flashing a device in a way that is not intended for it can turn your phone or smartphone into a “brick”. Choose the firmware carefully and read the instructions for its use.
However, for a number of devices there are special utilities for flashing. For example, all Apple devices can be reflashed using the iTunes multimedia processor. You just need to connect your iPhone, iPod or iPad to a computer with iTunes installed and click the Update Software button.
If you are not friends with the computer, then it is better to entrust password reset, "hard reboot" and firmware to acquaintances who understand this topic, or to service center specialists who the board will save you the headache of a locked phone.
The option to reset the pattern and password in Android OS is presented in the following video:
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