I am returning a defective Droid 4 for a replacement under warranty and don't want any personal info going back with my old phone. I am unsure how to clean all the info out of the old one so as to reduce the risk of someone getting hold of any of my personal info. I've used the phone much as you would a computer and I'm sure there are lots of passwords and credit card numbers that I need to delete. Can anyone help me figure out how to wipe this thing clean?
Thanks in advance for any help.