With the help of a heat gun. We apply 90 Celsius degrees during 4 minutes. We use a suction cup to leave the back cover. Furthermore, we use a plastic card to cut the adhesive to loosen the adhesive, we use a contact cleaner or isopropyl alcohol. You remove the back cover. We release the screws from the top of the device to continue with the disassembly process.
First, we have to remove the battery flex. Here we have the NFC antenna and the wireless charging. Here we have the motherboard flex cable. Now we remove the screen connector to loosen the adhesive. We use a contact cleaner or isopropyl alcohol.
We remove the battery. Now we return with the ass assembly process um. With the help of a heat gun. We apply 90 Celsius degrees during 4 minutes. We have finished the assembly process.
Source : MovilOne Phone Repair