Android Good budget android phones for long-term use


I have enabled that Tap Feature where I can turn on the flashlight by tapping twice on the back of the phone. SometimesIt just ceases to function and I have to restart my phone in order for it to work again.
Does it cease working even when the phone is fully unlocked? Generally the flashlight tap only works with an active screen (unlocking not necesary). Sounds like an annoying little bug though.