I'm a current Blackberry user, looking to switch to the 4S. Over the past few months, I've definitely gone about charging my Blackberry in all the wrong ways, as the battery begins to die out very quickly (even when not using it), and I just know it doesn't charge correctly. It's all because I overcharge it (leave it on charge when I'm not using it, charging it as I sleep throughout the night and first take it off charge when I wake up in the morning).
How do I want to go about properly charging the 4S so that I don't slowly kill the battery out?
I leave my 3GS plugged in all the time when I'm at work, it hasn't affected battery life at all.
It's possible that your BlackBerry battery is just getting old, as most phones these days have circuits built in that prevent overcharging. It's perfectly safe to leave them charging all the time with no adverse effects.
usually mine (iPhone 4) gets down to 20% and then i charge it while i sleep at night. Hasn't affect my battery at all.
I'm glad you're making the switch to iPhone... you'll love the experience.
(Iphone 4s battery.. source: Apple)
Built-in rechargeable lithium-ion battery
Charging via USB to computer system or power adapter
Talk time: Up to 8 hours on 3G, up to 14 hours on 2G (GSM)
Standby time: Up to 200 hours
Internet use: Up to 6 hours on 3G, up to 9 hours on Wi-Fi
Video playback: Up to 10 hours
Audio playback: Up to 40 hours
I charge mine almost every night when I go to bed so it is fresh in the morning. Every once in a while (Maybe once a week) I will let it drain all the way down till it shuts off completely and charge it full again.
I have read that this is good for the battery at least once or twice a month. Could be wrong though...
After reading this I feel like I have done bad things. My iPhone dies on me just about every day or so because I don't have time to charge through the day and by evening it is basically dead. I though you should allow them to fully drain and recharge often to keep the battery up.