How to safely shut down or force shut down HTC devices

HTC Wildfire E1 HTC Wildfire E1
HTC Wildfire E1 Plus HTC Wildfire E1 Plus
HTC Wildfire R70 HTC Wildfire R70
HTC Desire 19s HTC Desire 19s
HTC Wildfire X HTC Wildfire X
HTC Desire A8181 HTC Desire A8181
HTC ThunderBolt HTC ThunderBolt
HTC One SU HTC One SU
HTC One M7 HTC One M7
HTC Desire 600 HTC Desire 600
HTC Desire 601 LTE HTC Desire 601 LTE
HTC Desire 816 Dual HTC Desire 816 Dual
HTC Desire 516 HTC Desire 516
HTC Desire 516t HTC Desire 516t
HTC Desire 316 HTC Desire 316
HTC Desire 210 HTC Desire 210
HTC Desire 616 HTC Desire 616
HTC Desire 512 HTC Desire 512
HTC Desire 820q HTC Desire 820q
HTC Desire 816G HTC Desire 816G