How to: Disable home key/wake activation
I take no credit for this. This is a carryover from Note 2 and I got the info from some thread in one of the forums. This worked on my Sprint N3 and I just tried it on my ATT N3 and it works also.
Sometimes I keep my phone in my back pocket and I do not want the screen to wake if the home button is inadvertently pressed. This method prevents the home key from waking the screen. Only the side key will wake the screen when applied.
Root is required, remount /system as r/w.
1) Go to system/usr/keylayout and edit "gpio-keys.kl".
2) Scroll down, look for the "key 172 HOME WAKE" line.
3) Remove "WAKE" from the line and save, reboot.
YMMV, do at own risk, make file backup, etc.