Do you have one of these phones?
We test on several iPhones including the 6, 6S, 7, 8 and over ten Android phones running v6, 7, 8 & 9 so you should be covered!
If you have older versions of Android or a screen smaller than 4.5″ then please tell us. At the moment we have optimised for screens that are 5″ or larger, although we have checked the app works on the iPhone SE.
Source – deviceatlas.com