The product is of good quality and allows for taking nice pictures. However, the rubber material used has some issues. Specifically, the rubber between the phone and the lens is very slippery, making it difficult to keep a heavier phone like a Samsung S20+ in place. The user added extra rubber to improve the grip. Additionally, the rubber inside the lens holder ring is also slippery, preventing stable attachment of the lens to a tripod. If these rubber issues were resolved, the product would be considered excellent.