For example, If I call my voice mail not using speaker phone or bluetooth, when I hold the phone to my ear, screen goes blank (wish I could turn that off, it's so annoying)
After moving phone so I can see to enter password, first keypad input NEVER works. If for example my voicemail password is 123456, I have to hit the 1 key twice before it recognizes that I pressed 1 at all.
Another example
If after placing a phone call, I want to hang up, I have to end the end call button twice before the phone recognizes I hit the end call button.
Silly problem to have yet very annoying.