They purposely make these things flawed, purposely make them incompatible with older hardware to force you to get the newest versions. You need to get new chargers for it, things like Siri won't be allowed on older hardware, yes the hardware could run the newest version of Siri without a problem. They won't do that do you need to buy the next version. You know what they do next? They make the next iPhone with barely any upgrades and make that version you just bought seen obsolete and outdated.