A phone is not enough, you need a desktop too, most of our issues where with WebGl , first they broke it on iOS and we put a check to detect the mobile devices

A phone is not enough, you need a desktop too, most of our issues where with WebGl , first they broke it on iOS and we put a check to detect the mobile devices and disable th ee WebGl feature and use a downgraded 2D version , later Apple decided to update iPads browser to pretend it is a desktop(probably to avoid some websites sending iPad users the mobile version) but this broke our detection and this people where getting the webGl feature that failed on iOS. We fixed this iPad issue but later Apple put on desktop same broken WebGl thing and now we had to detect all newer Safari versions and downgrade them all to the 2d slower and uglier thing. I do not control the WegGl plugin I spoke of so I don't know the details why it broke, anyway we had the issues reported by customers because no developer in our team wants to use Apple stuff. I don't think the GNOME browser would have caught this WebGl issues since is probably related with Apple removing OpenGl support for their drivers.