Double Tap to wake feature gives you an alternative for using the unlock key to wake up your phone. You can enable it via Settings > touch and then check Double tap to wake up phone.
- What Bluetooth profiles are used on my Lumia phone?
- How can I check the IMEI number of my Lumia phone?
- The cable connection between my Lumia phone and computer does not work
- What can I do if the latest Lumia extras are missing on my phone?
- Why are the photos taken by Lumia Selfie different than with a normal camera on my phone?