Using this Melokuro Kuromi Smartphone Holder is easy. First, peel off the release sticker on the back of the holder. Then, stick it on your smartphone case. You can use it to prop your phone up for hands - free viewing while watching videos or chatting. It also looks great as a cute decoration on your phone. When it comes to care, just wipe it gently with a soft cloth if it gets dirty. Make sure to choose a suitable phone case for it. Avoid using it on phones with a curved or matte back, glass - backed models, soft silicone cases, or materials like leather or cloth that are hard to stick to. Using it with a resin smartphone case is your best bet to ensure it stays in place.