How To Disable Multitasking On Iphone 4/3gs, Ipod Touch 4g/3g & Ipad Running Ios 4.3.3, If you want to have better speed and battery Options

[nikolios]

Here is a quick guide for those who want to disable native multitasking feature of iOS 4.x.x on their iPhone 4/3GS, iPod Touch 4G/3G and 1st-Gen iPad to extend the battery life of their iDevice. To disable this feature, all you need is a jailbroken iDevice with iFile app installed on it. I have tested this method only on my iPhone 4 and iPhone 3GS but hopefully it should work on all other iOS 4.x.x iDevices





iOS Multitasking
Note: Before going for this manual method, i tried few Cydia tweaks (zToggle, Disable Multitasking) but none of them are working on iOS 4.3.3. As this is a manual method, so please make a backup of your PLIST files before tampering them
What PLIST File You Need to Edit?
For iPhone 4:

Location: System » Library » CoreServices » SpringBoard.app » N90AP.plist

For iPhone 3GS:

Location: System » Library » CoreServices » SpringBoard.app » N88AP.plist

For iPod Touch 4G:

Location: System » Library » CoreServices » SpringBoard.app » N81AP.plist

For iPod Touch 3G:

Location: System » Library » CoreServices » SpringBoard.app » N18AP.plist

For iPad:

Location: System » Library » CoreServices » SpringBoard.app » K48AP.plist

Steps to Disable Native Multitasking Feature of iOS 4.x.x:

Download iFile app from Cydia.

Install iFile
Navigate to System » Library » CoreServices » SpringBoard.app and tap on the PLIST file respective to your iDevice. In this case, i will be choosing K48AP.plist as i want to disable multitasking on my iPhone 4. Tapping on the PLIST file will open pop-up menu with the following 3 options:




Property List Viewer
Choose Property List Viewer from the displayed options and then tap on the Capabilities option.



K48AP (Capabilities)
Scroll down to multitasking option and turn if OFF.



Multitasking
Thats it! Respring or reboot your iDevice. Now that you have disabled iOS 4.3.3 native multitasking feature completely, you will definitely see a noticable improvement in the battery life of your iDevice.

[nikolios]

A much easier way is to install application ztoggle from cydia.
After you do, you have the option to disable multitasking and background wallpapers.
So simple