Google map API key on different android devices

I'm using MapView in my app. I have API key from google fore my release key store.

I'exporting signed APK with eclipse and trying to install it on devices.

On G1 device with Android 1.6 everything works well, but on HTC Desire with android 开发者_如何转开发2.2 maps doesn't appear. I see just grey grid and zoom controls.

Where problem can be?

I don't think this has anything to do with your Maps API key. I think it has to do with differences in the Google APIs from version 1.6 and 2.2. Do you get any errors in your logcat or just an empty map?