How to safely shut down or force shut down Tianyu devices

How to safely shut down or force shut down a Tianyu-branded device if it is unresponsive, screen broken or broken, without using the buttons or using only the buttons without swiping or using the screen.

Search for your device model and find the steps to turn it off, whether it is a mobile phone, tablet, smart watch or activity bracelet.

Tianyu U86 Tianyu U86
Tianyu E650 Tianyu E650
Tianyu D187 Tianyu D187