12 Replies Latest reply: May 5, 2009 11:31 PM by Apple Macintosh
DmentD Level 1 (0 points)
I am running software v. 2.2.1 but I have had this problem with all versions of the iPhone software since 1.1.4. I turn my phone off before bed, I watch the phone to make sure it shuts down all the way. I wake up in the morning and the phone will be dead. (3/4 full battery when I shut it off)This happens about once a month. Anyone else have this problem?

Windows XP, iPhone (EDGE) 2.2.1
  • svandive Level 1 (20 points)
    I have an iPhone 3g and have had it since the first day. The problem is it has been working flawlessly up till now. Now for some reason I am losing 20% of my battery per about 30 minutes of it just sitting and turned on. This is from a fresh reboot and power up. Even if I don't touch the phone or start any apps. I have wiped the phone and removed all of the apps and settings. The only thing I have configured on it right now is active-sync to my exchange server.

    I know I can turn off 3G and such but the phone was working great and now all of a sudden the battery has just gone to almost unusable. I just can't figure it out.

  • rednano74 Level 1 (45 points)
    Are you guys calibrating your battery? Meaning, your battery indicator could be off from actual battery life. I think Apple recommends after a full charge letting your battery run all the way down (ONE CYCLE) at least once a month. After it dies, I would charge it all the way back to 100%.

    Here are many tips...

  • DmentD Level 1 (0 points)
    I calibrate my battery once a month. And the problem I am having only happens once every few weeks or so. Other than that my battery life is great. I can usually go a day and a half or two days from a full charge. My guess is that every so often something stays running when I shut the phone down and causes the battery to drain. I was just curious if anyone else had this problem.
  • Hisham Abraham Level 1 (0 points)
    I am having the same problem as svandive with my iPhone 3G after the latest update. I would like to add that the phone is heating up and the battery is draining really fast while on standby. I have WiFi and Bluetooth turned off. I restored the phone twice now and still have the problem.

  • deggie Level 9 (52,739 points)
    What type of mail account do you have on your phone?
  • Hisham Abraham Level 1 (0 points)
    I Have Microsoft Exchange and Gmail
  • deggie Level 9 (52,739 points)
    Try deleting the Exchange account and then set it up again.
  • Hisham Abraham Level 1 (0 points)
    Thanks Deggie,
    I implemented your recommendation. I will wait to see if it solves the problem.
  • Hisham Abraham Level 1 (0 points)
    Deleting the Exchange account and then set it up again did not solve the problem. It happened again yesterday, my iPhone got really hot and drained the battery.
  • Apple Macintosh Level 1 (0 points)
    Hi I'm having the same problem but I don't turn mine off at night. I bought a new iPhone 3G 4 months ago and it was working fine it lost about 1% over night until about a week ago. The battery is losing almost 50% over night. When I go on the Internet using 3G it uses about 1% ever 2 minutes which is not good. Any help?
  • realitydreamship Level 2 (295 points)
    There are some good tips here for battery saving...

    http://www.iphoneuserguide.com/apple/2009/04/04/iphone3g/save-battery-life-on-ip hone-3g/

    alternatively, you should possibly restore you're whole iPhone to make sure there isn't something gone crazy with the OS that is not shutting down one of your apps properly.

    I had this with Google Maps not closing properly, and thus the GPS stayed on ALL THE TIME. a quick restore fixed the problem.
  • Apple Macintosh Level 1 (0 points)
    Hi I restored my iPhone 3G and now it's working fine. If you are going to restore your iPhone 3G when you plug it into iTunes for the first time after restore select restore from back-up.