Most of my phone usage when I am out is when I have an audiovisual notification of some sort. But keeping my phone on silent combined with the Palm phone never

Most of my phone usage when I am out is when I have an audiovisual notification of some sort. But keeping my phone on silent combined with the Palm phone never reacting to any program while the screen is locked, means I just use it less. So while occasionally it still runs out of battery when I'm out, in practice it doesn't do it any more than any of my previous phones.