iPhone v. BlackBerry

[AmiGR]

I hate to knock my iPhone again, but I get amazing battery life out if my Nintendo DSi. The iPhone doesn't even last a day on standby....

I saw a significant drop in battery life since OS3. On the other hand, I've also found that disabling WiFi and 3G increases the stand-by time quite a lot. I went on holiday to the Alps, was listening to music on the way down to London (a good 3 hours) and then only used the phone for calls after that with very occasional WiFi use in McD's, maybe once every a day. It lasted 5 days without a charge. Am I satisfied? Not particularly, I would want a better battery life when I actually use it as a smart phone but this means that if you use it as a phone you can actually get quite good times. And it also means that it's no worse than my P990i that used about as much battery to do less.

[AmiGR]

Sorry but is worse, i dont know the capacity on mah but compared with psp, nds, and  many more gadgets its worse (all in best charge conditions).

Well, I do. It's a 3.7V battery providing 1150mAh. The Sony Ericsson P990 comes with a BST-33 950mAh battery and the DSi comes with a TWL-003 850mAh. What that means is that the iPhone just uses more power, not that its battery is smaller, it isn't. Scanning for 3G uses battery, GPS uses battery, WiFi and Bluetooth use battery, the CPU for all of the above, etc. Disable those features when not needed and the battery life is quite OK. I will admit that it still is not perfect but as I said in my previous reply, I've managed to get 5 days out of it and I usually get 2-3 with normal usage. If I play a lot of games and browse the web on 3G all day it does drain the battery quickly, it'll last just over a day.