I am a new android developer and currently creating a wallpaper app that is meant for smart phones only. The size of the images used in the app is 480x800 px.

How can I configure the app settings so that the app can be enjoyed by tablet users as well?

What settings do I need to provide in the app so that it can work on both smart phones as well as tablets. I can increase the pictures pixel say 600x1000 but internal app settings I'm not aware of. Thanks!