Some Useful Skills - sukanka/MEIZU16S_unlock_tutorial GitHub Wiki
In any condition, you can hold Volume up (down) and Power, and release Power after a shock while still holding Volume up (down) to enter Recovery (Fastboot) mode
In any condition, you can connect your phone to computer, then hold Volume up, Volume down and Power, and release Power key after a shock, while still holding Volume up and Volume down to enter 9008 mode
In stock MEIZU Recovery mode, you can click Volume up for 5 times, then Volume down for 5 times to erase your data fully. This may be helpful, when you can not boot into system.
when unlocked, you can boot your device to Fastboot, and use Fastboot oem lock to relock your device.