Unlike iOS 16’sLockdown Mode, however, Maintenance Mode doesn’t protect against cyberattacks.
Instead, it guards your information from anyone who physically has their hands on your phone.
Once Maintenance Mode reaches your rig, you could turn it on through controls.

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Though Samsung recommends backing up important personal info before using it, just in case.
Samsung
The global Maintenance Mode rollout starts today and will continue up to and through 2023.

Samsung