i experiment with a lot of android. By chance, i happen to have HTC one and i was able to get the email and text to display my nav screen. Another current device i know it will work for sure is the Moto X att version. Not sure other work.

I tried with iphone 4, 4s, 5, and 5s...none work for me.

With the HTC One, it was able to download all the email. Where as the Moto X, it only download latest unread email.

Hope this will help.