Content are not scrolled in the iphone7 in ionic3?

After generating the ios build i have scrolling issue in the in iphone7 device but in the another ios devices scrolling working properly but in the iphone7 scroll not working and screen is freezed idon’t understand what the problem behind that.i have tried below but not working for me :

scrolling-content {
   overflow-y: scroll;
   -webkit-overflow-scrolling: touch;

When I do this it seems to slow the scrolling on mobile specifically iOS devices. Is there some sort of performance issue with moving the scrollbar from the body?