Breakpoints not working for ipad devices 9th and below

I have used a breakpoint for my application but for Ipad devices 9th and below they are not working as expected , ipad devices only considering 3.5 which is the default one even if there width in range of this breakpoints

//settings

slidesToShow = 3.5;
responsive = [
{
breakpoint: 1025,
settings: {
slidesToShow: 2.5
}
},
{
breakpoint: 820,
settings: {
slidesToShow: 2
}
},
{
breakpoint: 428,
settings: {
slidesToShow: 1
}
}
];