HTC One X has power management problem says custom ROM developer
The incorrect APK placement is costing the HTC One X user 10% to 20% of his battery life. The good news is that the fix from mike 1986 will recapture that missing battery life. If you want to use the unofficial patch, you will need to install the new APK on their HTC One X via ADB and change the permissions. You can see the instructions from the developer himself at the sourcelink. If messing with your handset is foreign to you, we'd suggest waiting for the official fix from the Taiwan based manufacturer. Until then, just remember to travel with your charger.
Did you catch our review of the HTC One X? If not, or if you want to view an encore, you can check it out here!
source: Xdadevelopersforum via Engadget