how to start galaxy s6 in boot mode
Step 3: Press and hold volume down button AND the power button. To boot into Samsung Galaxy S6 safe mode, you cannot just press power button to turn on Galaxy S6. Instead, you need press and hold two buttons on Samsung Galaxy S6: Volume down button and Power button.Once screen lights up, you can release power button.tep 1: Power off the phone. If your Galaxy S6 is on now, you need power off the phone first. Press and hold the power button for 2-4 seconds to get the power menu on the screen as shown below. Tap Power off as shown below.