Cams should on Android 2.1 and higher through the app and mobile site. Actualy, they should even work if you look at them on the main website.
We were having cam server issues yesterday, so you might give it another try today.
If you still can't see them, post what phone and network you are using here and we will look into it. Could be that your cell network is limiting your bandwidth usage, might see it if it works over wifi.
At any rate, let us know and we'll try to get it fixed.