Two issues:

First, the front-page checkin doesn't work. It still tells me that I will be able to check in at some time in the past. (Selecting that flight and checking in a few screens later does work.)

Second, is there some way to store boarding passes locally on the phone, so I don't have to go through the full login to see them? This can take much longer than I'd prefer when I need to show the boarding pass.

Finally (this one isn't the android app specifically) if I check in online and say to send the boarding pass to my phone, the picture that arrives is too small to be read. (Fortunately, it can be expanded by the phone.)