To get the battery percentage to show up on your iPhone, you must be jailbroken [ How To? ] and must know how to SSH [ How To? ].
Steps:
- SSH into iPhone and go to /System/Library/CoreServices/SpringBoard.app and copy the M68AP.plist file to your desktop after creating a backup of it.
- Using a text editor [ Windows users can use .plist editor from HERE ] open the file.
- Next add the code below into the file:
<key>gas-gauge-battery</key>
<true/>
Make sure the file looks like this before you save it:

Once you’ve done this, save the file and copy it back to “/System/Library/CoreServices/SpringBoard.app”.
Respring your phone and go to Settings->General->Usage and turn on the “Battery Percentage” toggle to see you’re battery percentage like below!
