Previous 1 2 Next 29 Replies Latest reply: Oct 22, 2011 10:52 AM by diesel vdub Branched to a new discussion.
williamfromnorth Level 1 (0 points)

started with 100% battery life:  after 2 hours of use of my iphone 4; 2 short phone calls, 20 minutes on internet checking mail and , 1 txt messaging session lasting 5 minutes, i have 85% battery life left.  is this normal battery drain.

  • trails247 Level 1 (30 points)

    yeah, that sounds about normal

  • Sparky87 Level 1 (10 points)

    My first iPhone 4 Had terrible battery life, it would drain in an entire day with no usage and get extremely hot with minor usage. I exchanged it and now have had no issues until recently where I'm in the same boat as you, I dock mine over night and use it as a clock for my room, when I undock it close the apps and leave it on my desk in about 10 minutes it's already at 95% without being used. Today in a matter of 30 minutes of sending about 5 texts I was at 85%. now mine sounds a little more rapid of a drain then yours but I was under the understanding the battery was supposed to have a decent life span, and mine always has until now. Now it drains with little to no use so I ask trails247 how can you say that sounds normal?

  • trails247 Level 1 (30 points)

    I'm saying, I have had the iPhone 4 since launch day last year in June, and this phone is a battery beast. No matter how you look at it.  Now your 30 min of use seems a bit extravagent. I am saying that the previously mention situation (2 hours of use) and it goes down to 85% sounds about normal.

    You have to understand that this phone is doing multi-tasking, notifications and all sorts of things phones used to not do. You can help save battery life by turning of location services, notifications, turing down the brightness on the screen, turning off wifi and 3G when not in use.

  • Sparky87 Level 1 (10 points)

    trails247, I have had mine since launch too and the first phone I had, had issues. and I know all about the "new" features and how to maximize battery life and do all of those things. But in the last 2 weeks or so the amount of battery usage my iPhone 4 uses has almost doubled it's original usage and makes no sense. I have all of my settings the same.

  • williamfromnorth Level 1 (0 points)

    I use my iphone 4 as an alarm clock overnight while it is docked.  I wonder if the fact the the alarm clock is on and showing on my screen all night prevents the phone from getting a true full charge 

  • trails247 Level 1 (30 points)

    I will say this, I found out that AT&T does uploads over 3G at night (usually around 3AM) in large quanities. I don't know if that helps all. Ever since I upgraded to 4.3.1 and now 4.3.2, I will say I have lost some of my battery life as well, I just kind of accepted it as normal. I am not saying I am a battery expert, but the phone does a lot of things even when in idle. Like a computer.

  • trails247 Level 1 (30 points)

    that might be, how bright do you set the clock app to be? because it is on a continual drain, while trying to charge

  • williamfromnorth Level 1 (0 points)

    I keep it as dim as possible but where i can still see it

  • williamfromnorth Level 1 (0 points)

    that might be why the iphone doesnt come with a built in alarm clock face that stays on all night if thats the case i'll just dump the app. it was only .99

  • trails247 Level 1 (30 points)

    If you haven't already, I would turn off all of the location and notification stuff at night while on your nightstand, 3G, wireless, all that extra stuff too. It might help.

  • williamfromnorth Level 1 (0 points)

    will try thanks for the helpful posts

  • trails247 Level 1 (30 points)

    your welcome. get into a habit of doing it at night, helps save battery life!

  • Michael Black Level 7 (20,392 points)

    Once the battery is fully charged, charging stops though, and the phone will just run on the mains power.  You can safely leave an iPhone plugged in all night long, no worries.  I've been doing that for years (I use a dock on the bedside table), and that way, it is always fully charged when you are ready to go in the morning.

     

    In terms of battey use, obviously it varies drastcially as peoples pattern of use varies so much.  But, with any smart phone if you are using the features a lot (email, especially push, texting, calling, web surfing, watching video and live feeds, reading news sites, ebooks, taking notes, using GPS/location services) etc, etc) you will need to charge the phone daily.  If you are a heavy user, get yourself a car charger and an extra one for your office or work - I basically plug my iPhone in whenever it is convienent to do so (office, car, home, wherever I am easily near a place to plug it in) so it is always juiced up for when I am on the go.

     

    Li polymer batteries are not harmed at all by very frequent partial discharge/charge cycles - in fact, they will last longest that way (it is repeated deep cycles that take a toll).

  • Carolyn Samit Level 10 (103,365 points)

    Article here may be helpful.

     

    http://www.apple.com/batteries/iphone.html

Previous 1 2 Next