dannejanne
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- Jan 27, 2012
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From what I've been told, the double-tap to wake feature is software, not hardware dependent.
It's a possibility that Microsoft wants people to prefer using glance screen to see notifications (without needing to double tap). Personally, I don't like my screen being lit up continuously (especially at night), so I've upvoted plenty of double-tap issues in the Windows Feedback app.
It needs support in both processor and screen/digitizer if you don't want to drain the battery. But most phones today should support this. At least most processors. But the digitizer needs to be powered without powering the screen too at the same time.