[Q] Phone App wake up problem

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http://forum.xda-developers.com – Hi all I'm experiencing issue with phone app. As you know, in call, the screen turns off when the phone detects something on the glass. The Note II is pretty fast to do that. But when you want to open contacts, or record the phone call, or find a mail without hanging up, it takes 3 seconds for the screen to switch on. Really annoying. Sometimes it works pretty perfect, sometime not. I don't think it is a hardware problem. 3 seconds is pretty short but very long when you are in a hurry. Is anybody else experiencing this kind of problem ? I've tried to change the CPU governor and also t (HowTos)