The app I am developing now is not visible in Google Play from Nexus 5x.
As it does not support tablets, there is a
section in the manif
According to Google the Nexus 5X has a xxhdpi screen but with a density of 2,6.
So 2,6 * 160 (mdpi) = 416, but according to Android developers' site the accepted value is 420.
So just add
<screen android:screenSize="normal" android:screenDensity="420" />
UPDATE: The new 5" Google Pixel has the same density so the same rule applies for it as well.