Thorin Klosowski has a piece up at Lifehacker where he states that quitting apps in iOS can actually worsen battery life – and quotes a former Apple Genius Bar tech on the subject:
Yes, it does shut down the app, but what you don’t know is that you are actually making your battery life worse if you do this on a regular basis. Let me tell you why.
By closing the app, you take the app out of the phone’s RAM . While you think this may be what you want to do, it’s not. When you open that same app again the next time you need it, your device has to load it back into memory all over again. All of that loading and unloading puts more stress on your device than just leaving it alone. Plus, iOS closes apps automatically as it needs more memory, so you’re doing something your device is already doing for you. You are meant to be the user of your device, not the janitor.
I don’t feel 100% sure that his premise is right, and browsing through the comments thread I’m not the only one with doubts on it.
And even if the premise is right, then to me it’s just an excellent confirmation of why iOS devices desperately need more RAM. I don’t get any great joy out of being my iPad’s ‘janitor’ – but I sure as heck know that I *need* to be its janitor on a regular basis when it comes to managing memory. That is if I want apps to be able to refresh pages properly. Or to prevent apps freezing up. There are numerous times per week where I need to close out a ton of apps in order to allow one app to run correctly.
Seriously, biggest wish list item for the iPad 6 or whatever this year’s model will be: RAM. Lots of it.