Launch Gallery. Go to the "Albums" tab and click on the three dots at the top. Open the "Recently deleted" or "Trash Bin" (the name depends on the firmware version) It's worth understanding that on Huawei P20 Lite, recently deleted files are stored in the recycle bin can for a limited amount of time.
Very Fine Sandpaper. Water & Soft Cloth. The finer the sandpaper, the better as it will not scratch the surface. Clean yellowed plastic starts by lightly rubbing the surface with a soft cloth to remove any loose particles. Then wipe down the top layer of the plastic with very fine sandpaper.
VdGqABR.