My 13-year-old did it on his iPhone SE with a little help from me. Hardest part was getting the old battery free of the adhesive gluing it to the case. He w

My 13-year-old did it on his iPhone SE with a little help from me. Hardest part was getting the old battery free of the adhesive gluing it to the case. He wouldn't use the hair dryer long enough to make the adhesive more pliant and ended up twisting and yanking the battery free. I put the old battery in a bucket on concrete overnight because he thought he might have punctured the envelope and I was worried about it catching on fire. No problem recycling it. It was about $20 for an Amazon battery kit that came complete with tools. Had 20% more charging capacity than the original (when it was new) and my son is very happy with the result. Earphones worked fine, screen worked fine, etc.