As someone who likes to save money by postponing buying a new phone, this has been a problem for me as well. My iPhone 4S became very slow with iOS 9 and had a

As someone who likes to save money by postponing buying a new phone, this has been a problem for me as well. My iPhone 4S became very slow with iOS 9 and had a quickly draining battery. I eventually stopped using it when the speaker broke as I could no longer use it as a phone.