Vivo’s telephoto extender makes the world’s best phone camera better

When Xiaomi and Realme both rocked up to February's Mobile World Congress with concept smartphones featuring attachable camera lenses, Vivo's executives must have had a quiet chuckle knowing they were ready to launch the real thing just two months later.

Its flagship X200 Ultra went on sale in China a few weeks ago. Even by itself, it's probably the best camera phone in the world right now, but it's made even better by a unique accessory: a custom-made 2.35x telephoto extender lens, which...