add note on permissions

Android/how-to guides/getting-started-rome-android.md

@@ -30,6 +30,8 @@ If you wish to use ProGuard in your app, add the ProGuard Rules for these new AP
 
 In your project's *AndroidManifest.xml* file, add the following permissions inside the `<manifest>` element (if they are not already present). This gives your app permission to connect to the Internet and to enable Bluetooth discovery on your device.
 
+> Note: The Bluetooth-related permissions are only necessary for using Bluetooth discovery; they are not needed for the other features in the Connected Devices platform. Additionally, `ACCESS_COARSE_LOCATION` is only required on Android SDKs 21 and later. On Android SDKs 23 and later, the developer must also prompt the user to grant location access at runtime.
+
 ```xml
 <uses-permission android:name="android.permission.INTERNET" />
 <uses-permission android:name="android.permission.BLUETOOTH" />