lets see a phone with great battery life....the ui dosnt need a 1ghz prosser to run fluid
? You're not making much sense. ARM CPUs can idle, and the OMAP 4 line is designed to use M-series ARM processors and a 2D engine to run the desktop allowing the CPU and GPU sections to be gated off. The Apple A5 doesn't appear to have anything vaguely similar. Plus unless you're going heavy on the white AMOLEDs tend to be more efficient then basic LCDs like Apple is using.
If you mean the iPhone line while they apparently went from a 5.254 Whr to a 5.5 Whr battery battery, but the Apple A5 and A4 are both supposed to have been fabricated on Samsung's 45nm process. Hence Apple's specs indicate that idle time went from 300 hours with the IPhone 4 & 3GS to 200 hours for the iPhone 4S, with the iPhone 4S beating the iPhone 4 only in terms of 3G talk time 8 hours to 7.
Note the IPhone 4S' issues verse the IPhone 4 should be worse as the CPU and GPU die come off idle, and the DSP and other differable logic become less able to allow the rest of the die to be gated off. Well at least if you ignore race to execute efficiency adds, but those favor Android handsets more. I don't use either, but with the same usage profiles I don't really see an OMAP 4430 losing verse a A5 everything else being equal, which seems to pan out with the Droid Bionic which current reviews would indicate is superior to Apple's published battery life specs. Based on the reviews I'm seeing the iPhone 4S loses to the point the Droid Bionic's 4G talk time is effectively the same as the iPhone 4S' 3G talk time.
at it will at least be supported for a few years with software updates..
The iOS 5 update is only going two years back to the iPohne 3GS as far as I can tell, and that mainly seems to be because they're not shutting down that product line quite yet. Their iPad 1 vs 2 software situation on the other hand is a clear example that when they're ready to do a phase out that they don't care regardless of how long it's been.
So I'm going to have to say you're being overly optimistic, and seem to be trying to buck the actual trends. Android users seem to be the ones that just end up hanging onto their handsets.