Please read the full description to avoid issues. This app requires KUSTOM LWP PRO to be installed on your device to be able to use it. Instructions to add a wallpaper: Install Kustom LWP Pro. Install Marshmallow for KLWP. Open Kustom and select "load preset". Select Marshmallow for KLWP and choose one of the 4 presets (look at description for phones with or without softkeys!