Is your phone battery quite strong, or has it depleted over the years? I heard iPhones used to be really bad for battery back in the day but are slowly getting better. I've never had an iPhone so I am not entirely sure but my Samsung battery has been kind to me over the years. I have had this one for almost 3 years now though and it is giving up on me. Does anyone also know where I could find one brand new and from a trusted website?