Meizu E5 - Manual (Page 19)

Hold
Using hold function to make buttons inoperative and prevents unwanted action
caused by accidental pressing.
Switch to hold: Function button to switch to Hold.
Release: While holding, function button to release.
While switch to hold function, all the buttons cannot be operated.
It is irrelevant to listen music or FM stations.
==<HOLD>==
==<RELEASE>==
19
Basic Operation
Function
Function