I just took out my iPhone 4 of 6 years from the desk to see how it was going and noticed the back had popped off and I noticed the battery swollen a little. Before doing anything in terms of disposing or replacement, id likely remove any data on the phone and since it has no charge, I wanted to ask if it was safe to power it on and erase everything without the risk of it burning out on me.
http://i.imgur.com/ZK74nxv.jpg
http://i.imgur.com/9M7Ndz1.jpg
thanks