Facebook Login to App Settings

Can anyone tell me what settings i need to add to the Facebook Website to get the login to launch on the Android App.

It works fine on the Emulator but button has no effect on the phone.

can anyone tell me what settings they have on facebook Developers for the Android settings?

i have the package name as the

Google Play Package Name -> com.appname.ios
Classname -> MainActivity
My generated key as the key hash.

is there anything else anywhere that i need to change?