When I got my tablet, I found a big mark on the touchscreen. It was still there after I removed 2 protectors, can you help?
Answer: Either adhesive tape or suction cup is all right. You can use the more convenient method.
When you use the suction cup, the action should be Slight and Gentle. Just pull it up a little, rather than pull out the whole cup. Repeat it gentlely for 3-7 times, then you will find the spot is disappearing.) Here is a video of how to do it.