I see in network settings a option to enable always on mobile data.. Does this option need to be on or off.. any diff in performance when i click on it states that it uses more power in some mobile networks if you disable it it says it may cause connectivity problems in some applications and that you may need to manual refresh ect... whats the best option here
I would leave it on as is. Using more power on some mobile networks refers to your phone when it has a weak signal, or is roaming. Unless your roaming often, it shouldnt impact your batter too much. If it does, switch it around and see what works best for you.
I would leave it on if you want your apps to be able to update. If you turn it off, your 3G connection will turn off until your screen comes back on. For some it might not be a big deal and will save some battery power, but you won't be connected until the screen comes back on. For me, I leave it on because I am always on Google Talk, have Flightview and need the updates and a few other apps. If I turned it off, GTalk would disconnect and flightview couldn't update until I turn the screen back on.