Batteries batteries batteries!
Forget new features, the one innovation needed on phones more than anything else is a much higher capacity battery which isn't physically any bigger.
All the phones that have the latest greatest features have batteries which last maybe one or two days, it's just not good enough. You don't dare use these innovations because you don't want to use the battery up, and even when you do get to an electrical socket, charging can take several hours.
At the moment, the only way to avoid bad battery life is to buy a simple phone or a huge phone. It's Hobson's choice really.


