Help with adhesive strips

Make sure the battery is disconnected, get a plastic spuger heat the back of the phone where the adhesive strip is on the battery. Slowly pry on the edge of the battery a little from one side to the other. Do not bend the battery to far because it can cause a short of the battery and catch on fire. When you heat the back of the phone up make sure not to overheat it, use a hairdryer or a heat gun. You should be able to touch the back of the phone with out burning your fingers, if it's to hot to touch it, it's to much. I would do this outside or in the garage away from anything that can burn and have a fire extinguisher next to you. I am not trying to scare you, they get really hot and put off a lot of smoke when they ignite. But if you are careful and go slowly you shouldn't have a problem. You may want to watch a video on YouTube about how to pry out a battery. Be careful, go slow, be prepared and work in a safe area. Or take it to a repair shop. Best of luck