In the last year I've been working with a student in an Android INDI client. It is in a quite advanced state, although there are many interesting features to come (some of them will be available very soon): previsualizing FITs, special interfaces for usual devices (mounts, CCDs, focusers and so on), alarms... At this point it allows to connect to multiple INDI Servers and show / change any property of their devices.
In fact, my student will be presenting this project in order to obtain his degree in Computer Science next week. We want to invite you to install and test and use it. We cannot promise that it will work out of the box (bugs are expected, of course), but we will be very happy to receive input from you, including change requests, bug reports and so on.
That is quite strange... we have tested it with several devices and android phones and it worked without much trouble. We promise to check it out. Probably it will be some bug related with the release in the Google Play. Sorry for any inconvenience!!