hello.
app version TELLO 1.2.10.4
using two devices:
motorola g2 - photo ok, but video is grayscale with magenta, green artifacts and ghosts
nexus 7 (2012, wlan) photo ok, video ok, but not great wlan connection
aTello 0.96 -app
both devices are very good useable, moto g2 better than nexus 7...