How do you keep sharpie on a phone case?

To keep Sharpie on a phone case, first ensure the surface is clean and dry. You can then use a clear sealant spray or acrylic sealer to protect the design after the ink has dried completely. Additionally, avoid excessive rubbing or exposure to water, as this can cause the ink to wear off. For extra durability, consider using a case that has a matte finish, as it can help the ink adhere better.