I'm having similar problems to Charlie and Chiris in their posts. The App is not taking constant or correct TC from 788 on the iPhone but it works fine with iPad. The iPhone app seems to receive an intermittent signal then shows "no signal." But even when the signal is strong it does not display correct TC on the iPhone app. The app seems to have a problem staying connected to the iPhone.
Works great on the iPad.
I have current firmware (5.1.1) for iPhone and iPad and latest firmware for 788T (2.18)
