Share your experience!
Hi, the Double Tap To Wake feature tends to have a mind of its own....with my phone it has always been a bit of 'hit or miss' so to speak, sometimes it works perfectly other times like yourself you have to tap a few times 
Many posts on this so try not to worry its not just your phone :smileysmileywink:
I can agree with dandy63 as mine works 'most' of the time and then, suddenly, it doesn't.
Martin