Hello guyz. Please help me. I tried to replace my iphone 7 battery. When i was removing the 4 tri wing screws on the cover that is covering the battery cable Etc, I used many screwdriver because at first I didn’t know that those are tri wing screws. I ordered .6 tri wing screwdriver. I successfully removed the 2 screws but the other 2 cannot remove. I think they are stripped or they are damaged because of what i did pn my first try. I dont know what to do. My iphone battery health is 73 percent. I want them to be removed but i dont know how. Pleaseee help mee guyss. (Sorry if my english is bad, im from Philippines) please help me