How to Boot your Android Device Into Safe Mode using Power Menu
Note: Some older devices and a select few newer ones cannot access Safe Mode this way.
Step 1. Hold the Power button of your Android phone for 2 seconds. This will load the power menu.
Step 2. Press and hold “Power off.” A pop-up window will appear asking if you are willing to boot into Safe Mode.
Step 3. Press “OK.” When your Android device reboots, you will see the words “Safe mode” displayed at the bottom-left corner of your screen.