Tony

My Samsung A8 Plus 2018 display is damaged, the screen glass broken, the screen can be lit but the touch is not sensitive....

I think you can check the contactors on the LCD screen flex cable, If you use too much force when you install, It might bend. Here has Moto Z Play LCD screen replacement video, I hope it will help you.

Hi, do you often play with your phone while charging? If so, it will reduce the battery life of your phone. In my opinion, you may need to replace a new battery. Witrigs has released a video on Youtube about the OnePlus 3 battery replacement video, Maybe this video can help you.

You can try to tear it down, disconnect the LCD screen flex cable, reinstall it, and check if the problem is solved or not. Otherwise, it may need to replace a new LCD screen. Witrigs has released a video on Youtube about the Samsung Galaxy J7 LCD screen replacement video. Maybe this video will help you.

Hi, If you don't tear it down and disconnect the battery flex cable, it may be broken. Now you can try to tear it down and check if there is still water on the LCD screen flex cable. Then you can put it in uncooked rice to suck up moisture and reinstall it to see if it works fine. If not, you may need to replace a new LCD display. Here is the Samsung J7 Pro LCD screen replacement video, which may help you.