Do IONIC use overflow scrolling and webkit overflow scrolling touch?

I tested some app and sometime when you have a long scrolling page with images it do not scroll well.

Do all scrolling are javascript or use the css?

overflow-y: scroll; /* has to be scroll, not auto */
-webkit-overflow-scrolling: touch;

Now i think that 98% of mobile user have the overflow touch working.
it’s only old Android version: 2.3 and earlier who do not scroll without javascript.

you may try a script to detect old Android version?

And scrollfix for IOS to stop the header or footer from bouncing.