Verizon iPhone 4 battery drains at 20% an hour

Discussion in 'iPhone Tips, Help and Troubleshooting' started by bryann9182, May 18, 2011.

  1. bryann9182 macrumors regular

    May 18, 2011
    went to work yesterday with 98% battery. At work I have no service (maybe 1-2 bars at most) and i'm usually on the EDGE network. Over a period of 6.5 hours, with medium usage, my battery went from 98% to 9% by the end of the night. A girl who I was working with has the iphone 4 as well on the same network, and her battery only went from 79% to 66%.

    I had wi-fi turned off, no apps running in the background and set my weather to update every hour instead of half hour like I usually have it. How could my battery be draining that much that quickly? My brightness was set to the same as hers, w/ auto-brightness turned on.

    battery is 100% fine at home with full service and everything. Lasts all day. When i'm at work with no service and moderate usage the battery drains at almost 20% and hour

    Version 4.2.6
    Modem Firmware 1.0.05
    Phone is jailbroken
  2. srl7741 macrumors 68020


    Jan 19, 2008
    In my world
    That's b/c the phone is constantly trying to get that cell signal and working overtime to get it so when there is no or very little signal you will notice the battery drain pretty fast. When you know you won't have a cell signal turn it off and you will not drain the battery. When you leave work turn it back on and you should be fine.

    Occasionally I'm in areas where there is zero cell signal and if I forget to turn off edge/3G my battery takes a big hit Also.

    It's normal.
  3. -aggie- macrumors P6


    Jun 19, 2009
    Where bunnies are welcome.
    Your battery is draining due to the service issue (little to no service). It’s one of the biggest drainers, besides the brightness of your screen.

    Edit: Turn off 3G and you should do better.
  4. patp Guest

    Apr 10, 2008
    ditto what the above 2 said. When I'm in Ontario, CA there is little to no 3G signal. I notice my battery draining at a much faster rate.

    When I return to Orange County where the signal is great, my battery lasts and at the end of the day I'm usually around 60%.
  5. bryann9182 thread starter macrumors regular

    May 18, 2011
    I have 3G turned off all the time through SBsettings, but what I do have enabled is 3G Unrestrictor. Would turning off Wi-Fi and 3G unrestrictor through SBsettings be the same as disabling 3G?
  6. -aggie- macrumors P6


    Jun 19, 2009
    Where bunnies are welcome.
    I don’t understand the question. You have 3G off, so it’s off. The issue you have is that your EDGE is also probably very weak, so your battery is being run down looking for that too. You could turn off wifi, but I doubt that’s the source of most of your drain.
  7. bryann9182, May 18, 2011
    Last edited: May 18, 2011

    bryann9182 thread starter macrumors regular

    May 18, 2011
    basically what I am asking is would having 3G Unrestrictor on in an area with no service drain my battery as bad as if I had 3G on in an area with no service.

    My friend has the iphone 4 for verizon as well. She was working with me last night and her battery only dropped about 10-12% in the 5 hours she was with me. She was texting fairly often too
  8. eastercat macrumors 68040


    Mar 3, 2008
    No. 3G unrestrictor simply tricks your phone into accessing wifi only items.
    Your best bet is to enable airplane mode. When I worked in the basement, before they installed AT&T antennas, I didn't bother with trying to connect.
  9. Mak47 macrumors 6502a

    Mar 27, 2011
    Harrisburg, PA
    Something's definitely wrong if it's doing it outside the basement where you have no service. Especially if you have a Verizon iPhone that says you're on the EDGE network. Verizon doesn't have an EDGE network.

    I'm no expert but that could be the root of your issue. If you've jailbroken the phone and the software doesn't jive with Verizon's network (the Verizon iPhone and the AT&T iPhone do run different software) it may not be functioning correctly.

    Did you have this problem before the jailbreak?

    If you have no service at all, you do need to just turn the cellular connection off. Searching for service will kill your battery faster than anything.

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