Vivo made a splash in the smartphone photography space last year with the vivo X200 Ultra, as it offered an optional telephoto extender. This external lens, attached to the 200MP periscope camera, enabled native 200mm or ~8.7x zoom. The company has since brought this same lens to the globally available X300 Pro.

Now, vivo has launched the X300 Ultra, and it maintains an optional 8.7x lens. However, the manufacturer has also launched an even larger telephoto extender that enables a crazy 400mm or ~17x zoom.

https://www.androidauthority.com/vivo-x300-ultra-17x-optical-zoom-lens-hands-on-3656970/?rand=7