Description Function:Battery Part Replacement Material:Plastic 1.Genuine items.Easy to remove with no glue residue. 2.This waterproof back lcd glue use for protecting your phone. 3.Compatible with:For iPhone 4.Specialized to perfectly fit your device with NO cutting necessary. 5.Back full Set Waterproof adhesive sticker for front screen and back cover. 6.We will not be responsible for any damages to your cellphone/mobile phone that you may cause during the changing of replacement parts. Method: The border sealant is narrow,thin and soft,and may fail to be pasted.It is recommended to buy more. When pasting, make sure that the sealant is not pulled and deformed. Carefully remove the protective film, press it into the frame and then peel off the protective film on the other side. Never tear off the double-sided adhesive protective film on both sides and remove the rubber ring to paste! Package Includes: Adhesive Glue Tape StickerX1