I'm using Android bitcoin wallet version 2.0 on a Kindle Fire. The app recives coins from the faucets perfectly fine, but when i send coins to my desktop wallet, they never arrive, and the transactions are shown as "unfinished" [in gray.]
The address i used to recive the coins from the faucet, and to send to my desktop, is 1K7MZNsaquwshDHYu5zP9FY2DSS4L34BSx
it acts up some times so the tx doesn't get broadcasted. Try closing it for good by holding the "back" button a few seconds and then opening the app again, it should broadcast the tx right away. I had the same issues but with the last update it seems to be fixed.