Samsung has begun to roll out the Maintenance Mode feature globally, which was previously available

At the end of the mode, you will be able to exit their modeservices by simply entering your phone password. In this case, all accounts, files and applications that appeared on the smartphone in maintenance mode will be deleted, and your accounts, files and applications will return to their place. The exact release dates for Maintenance Mode on other Samsung smartphones have not yet been announced.
© Ilya Nerybov.
According to Samsung