My phone is over 3 years old this month (which is 150% of a smartphone's intended primary usability lifespan) But it seems the (3rd party) case, of all things, has deformed with time and now pushes the (3rd party) battery out of its socket so much it can no longer be used. I'm now using the phone without it's case (playing with fire), but it still works. Part of the reason I haven't gotten a new phone yet is because they don't design phones to work like this any more: where the back is removable and battery replaceable. In the service of making devices thinner (dumbest thing in the world, really), these essential features were lost. Although: there is trouble: since this phone is so old, it barely runs YouTube music and maps at the same time, and software, as a rule, only gets bloatier with time, which means I will soon have to reinstall the OS to stave off hard-obsolescence.