[nebula]

I would recommend you to check first to see if your phone is sleeping or not first before you apply the fix.

Try this first and I am pretty sure just like me you should see your %'s in very high numbers.

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When your screen is actually turned off, there's no way for to know. However you can check your timer at: Settings < About Phone < Status < Awake Time. Pull it up and then put your phone to sleep. Wait 1 minute and then wake it up. If your awake time has counted by more than 5-10 seconds then your phone isn't sleeping. Also the % should be less than 100%. The lower the better. You can reset the timers by powering the phone off and on again.