I ran it myself as a secondary device for phone app testing and didn't have that problem. Maybe as a daily driver I would have had more trouble?

In my experience, the bigger issue was designers assuming everyone has the taller iPhone 5 screen size (or worse, iPhone 6) and burning up 95% of the screen with keyboard + giant fixed header + fixed footer. Some apps would give you space for maybe two lines of content in between all that.

More of a complaint with 3rd party devs on that though.