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Since jailbreaking with gp, my battery usage has been really high. Previously my battery could last up to two days with light use, but now its flat in less that a day.

How can I work out what's causing it and what can I do to fix it?

asked 16 Feb '11, 00:38

myphone's gravatar image


closed 19 Oct '12, 03:18

theiphoneguy's gravatar image

theiphoneguy ♦

The question has been closed for being "Other - old" by theiphoneguy, 19 Oct '12, 03:18

There are various reasons that battery drain can increase after jailbreaking, with various fixes.

  1. [New] Personal Hotspot/MyWi: Sharing your 3G connection to other devices is a massive battery drain, and if you've just updated to 4.3, you may well be trying out this new feature. I honestly can't recommend using this for any length of time without an extra battery pack or charger tucked away! At least it's got an easy fix--just turn it off.

  2. Simple increased usage: This happens mostly to new users who've never jailbroken before. With all the new things you can do on a jailbroken device, combined with the time spent getting everything set up the way you want it, you're simply using the device far more than you might think. If this is the case, then after a few days, your battery life will come back a bit closer to normal.

  3. Faulty config: Some apps may not be quite configured correctly after the jailbreak, Mail is often a culprit here--it attempts to connect to a mail server, fails in an unexpected way, and simply keeps trying again. So instead of Mail making one connction every 30 minutes (or whatever), it's continually trying to connect. You can test this one by disabling all your email accounts then restart and watch what happens. Fixing this can soemtimes require deleting and re-adding the email account, or sometimes even simply re-saving what you've got.

  4. Faulty apps: It often takes some time for apps to be updated to the latest version of iOS. Most of the time, this isn't a problem--apps either work, or they don't, but sometimes they can have adverse affects such as significantly increased battery use. To find out if this is the case, try disabling or not using specific apps for a few hours, then turn them back on and compare the battery drain. This can be a slow process, but may be the only way to find the culprit. If you manage to find one, you can leave it disabled short term to stop the battery drain, and contact the developer to see if they're working on an update.

  5. Heavy-duty apps: There are always going to be some apps that simply use a lot of CPU/battery. Video wallpapers, animated lockscreens, live clock icons, and so on. It may not be a huge amount of battery use, but it can definitely add up. If you're finding that these apps are draining your battery, you need to decide for yourself whether they're worth it for you.

  6. The Jailbreak: Sometimes it can indeed be the jailbreak process itself which results in the increased battery usage. While the devs try their best, they don't always have access to every possible iOS device model, or may miss some weird bug. If you've tried the above investigation without success, and are still getting huge battery drain even in Safe Mode, no apps running, Mail disabled, and the phone sitting unused for hours, then it could well be the jailbreak at fault. Fixing this may be as simple as a restore and re-jailbreak, or you may be out of luck for your device, and the jailbreak that you're using simply won't work well with your device. If this happens, you might want to try a different jailbreak method, or ask on here, making sure to specify what steps you've taken to reach this point!

A couple of extra tools that can help narrow down battery issues are BatteryLogger and BatteryDetective. BatteryLogger gives you a visual graph showing battery life over time, and BatteryDetective gives you lots of info about the current state of the battery. The Pro version also lets you analyse running apps to give an estimate of how much battery it's using in the background.

Specific Apps:

I've seen one report of GraviBoard causing a big battery drain in 4.2.1, though it was fine in 4.0.1. PhoneHint and RusActivator have also been reported to be large battery drainers.

Specific JB:

Some releases of GreenPois0n seem to result in increased battery drain, but there doesn't seem to be consistency in what people are reporting.

If you've tried all the above options (including re-jailbreaking and BatteryLogger/Detective), please post some specific details on here, but please try the above suggestions first!


answered 16 Feb '11, 00:40

Endareth's gravatar image


edited 06 Apr '11, 03:02

You should also add that certain jailbreak hacks like video wallpapers, animated lockscreens, live clock icon, etc etc will result in higher battery usage even when the phone is not in use. Great write-up!

(21 Feb '11, 10:43) mdelaossa mdelaossa's gravatar image

Using the older RedSn0w untethered jb, I'm seeing some battery drain, but not as much as seems to be reported by some of the gp jb people.

(21 Feb '11, 20:03) insecure insecure's gravatar image

putting it in airplane mode really helps ive found. only 1% drained overnight when airplane mode is on


answered 21 Feb '11, 20:03

Aperson's gravatar image



Does rather defeat the purpose of having an iPhone though :)

(21 Feb '11, 21:16) Endareth Endareth's gravatar image

I only have an ipod touch so its fine for me

(21 Feb '11, 22:16) Aperson Aperson's gravatar image

Fair point. So you're basically just toggling off WiFi and Bluetooth then.

(21 Feb '11, 22:21) Endareth Endareth's gravatar image

Doesn't even need Bluetooth on to drain--I never have BT on, but with WiFi is on the drain is on! I think I'm going to bite the bullet and downgrade to iOS 4.1 and jb. Things were just fine then.

(22 Feb '11, 00:03) bwoods bwoods's gravatar image

Here are 2 more applications from Cydia, when battery is discharging and the phone works slowly:

  • PhoneHint
  • RusActivator

answered 25 Feb '11, 04:24

iDancer32GS's gravatar image


The topic above was posted many times.. Nothing useful.... I can advice you to check the apps from Cydia... I had this problem because of app GraviBoard... Since I uninstalled it, my battery became normal.... Although this app was fine at 4.0.1...


answered 21 Feb '11, 04:32

iDancer32GS's gravatar image


I think DePersistWiFi from Cydia has improved my battery life, especially during locked time (iPT 3, 4.1 greenpois0n). It turns off Wifi when the device is locked.


answered 21 Feb '11, 12:06

Lanulos's gravatar image


Unless you're plugged into power, I thought that existing WiFi connections were closed when you lock it anyway?

(21 Feb '11, 20:01) insecure insecure's gravatar image

wow something is messed up with my battery. according to battery logger this is how my battery gose: 60% 20:02

55% -5% -4500% per hour 20:03

60% +5% +6000% per hour 20:04


answered 21 Feb '11, 13:23

big2to4's gravatar image


For those of you who are having battery drain (like me) I am curious--are you using a 16mb or 32mb device? My Touch is 32mb. There was another post that I was on that someone had a 32mb device and his wife had a 16mb and her phone had no problems but his had the battery drain.

I do not experience as much drain from r6 Final as I do from r6.1. 6.1 drained the battery pretty fast. R6 Final drains it, too, but not as much.

(21 Feb '11, 13:39) bwoods bwoods's gravatar image

Yeah when i jailbroke with RC5 my battery actually seemed better, as soon i done RC6 and RC6.1 i get a day with light use, only apps i uses sbsettings, and bite Sms :/ i have 8GB 3GS

(21 Feb '11, 16:45) ekud ekud's gravatar image

had the same issue. I only had bitesms, lockinfo and sbsettings running and only laster for 6-8 hours. I then jb wiht snowbreeze and installed the same apps and the battery is back to normal

(21 Feb '11, 17:01) coupeborgward coupeborgward's gravatar image


  1. Will only work if you use Redsn0w because redsn0w is better (no offense)
  2. Jailbreak with redsn0w(optional)
  3. Add Source in Cydia- Wait for it to reload

Then follow this - Hope it helps!!1.2.


answered 21 Feb '11, 19:05

reV17's gravatar image



Add source -Piracy repo- and download My OS, cracked. Then restart your device & go into settings, and turn off phone features selectively.


answered 21 Feb '11, 20:03

Kitastriphi's gravatar image


edited 22 Feb '11, 00:06

knightz4u's gravatar image


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Asked: 16 Feb '11, 00:38

Seen: 10,946 times

Last updated: 19 Oct '12, 03:18

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