realme showcased a concept phone with external lenses at MWC, while vivo launched the X200 Ultra in China with an optional external lens.The X200 Ultra's lens is part of vivo's photography kit, which includes a phone case, camera grip, camera ring, and shoulder strap.The phone and accessory combination is geared towards mobile photography enthusiasts and offers a unique experience.The setup process for vivo's external lens is straightforward, making it accessible for users who want to enhance their photography capabilities.