The Battery Life Thread
Following the iOS 4.2.1 release in the news and in forums I came across a discussion thread in Apple’s forums that is about the issue of some users having extremely poor battery life after the upgrade from iOS 3.2. I have not yet upgraded to 4.2 and I might in fact hold on to 3.2 for a little longer for other reasons, so I don’t know yet, if I will be affected the same way. There are some users claiming that this is what is to be expected now with multitasking and several apps taking up resources at the same time. Reading through these, I could not help to notice that there seems to be a fair bit of confusion and misinformation going on about how multitasking might contribute to this issue
So from a developer point of view, let me just state a few things. Please note that the general tone of this is that the “Apple/iOS version” of multitasking is by no means comparable to what you know from Mac OS or Windows, so many analogies are just not correct.