We have used these lenses before. At first, I was skeptical, and then I saw the output. They are a solid improvement over the standard options, or going without them. They really enable you to keep the DSLR in the case or at home.
With five lenses to choose from, the SANDMARC Lenses for iPhone 11 Pro Max, 11 Pro, 11 let you upgrade your captures no matter your niche.
Source: These SANDMARC Lenses for iPhone 11 Will Upgrade Your Photography