Why isn't the double tap to wake up my phone working properly?

[Ebuka Allison]

Did u get GDR2 using windows insider or without using it?

Only the 735 has GDR2 out of the duo, so he used the insider preview method (same build that rolled out with the 640 at first though)

 

[Umang Sehgal1]

Only the 735 has GDR2 out of the duo, so he used the insider preview method (same build that rolled out with the 640 at first though)

Are there any harms getting it using Windows Insider?

 

[Ebuka Allison]

Are there any harms getting it using Windows Insider?

Nope

 

[Umang Sehgal1]

Nope

What about future updates?

 

[Ebuka Allison]

What about future updates?

You'll get them.