[Windows Central Question]

wake up is not working 2 or 3 time touching and the sensor light not blinking my lumia 730

[jmshub]

Go to settings > touch. Is wake up turned on?

[EBUK]

If there is anything within about 5cm of the proximity sensor, tap to wake up won't work.

[xandros9]

If there is anything within about 5cm of the proximity sensor, tap to wake up won't work.

Same if the proximity sensor isn't working properly and thinks that.

[RumoredNow]

I've found that on my 1520.3 I need a certain rhythm, a specific cadence to get double tap to work.

When you say the "sensor light not blinking" that is not a correct idea. There are sensors and LED lights. You have sensors, they do not light up. There is no LED light to create a blinking notification with. That's Android. Lumias have Glance screen, Live Tiles, Notification Center and notifications pushed to Lock Screen... No little blinky light. It's just not part of the hardware.