QUOTE(tunertoobe @ Feb 18 2009, 02:28 PM)
I always charge with the phone off and only turn off the charger after the phone has fully booted(finished scanning and stuff).
Offline mode before going to bed and if I decide to listen to music for an hour or more.
I try to minimize bluetooth(i use it mainly to transfer files to friends, not to PC or headset). I always try and send everything they want in one session so I don't have to turn it on/off/on/off. However I haven't used bluetooth for the last 3 days.
actually i read before not recommended to turn off while charging... here is an example.. i read a few articles also before this that mentioned this...
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http://www.wikihow.com/Make-Your-Cell-Phone-Battery-Last-Longer
You should not have to turn off your phone to charge it. Most battery chargers deliver more than enough current to power your phone and charge it at the same time. Doing so will not lengthen the charge time, and leaving a phone on allows the user to be aware of its fuel gauge, so that you can remove it when the battery is full.
just another link for prolonging battery life ->
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http://www.allaboutsymbian.com/features/item/How_to_make_the_Nokia_5800s_battery_last_as_long_as_possible.php