Oppo’s Bubble is a thin round screen for taking rear camera selfies

Oppo launched a new smartphone accessory that makes it easier to snap selfies using your smartphone’s rear cameras that typically feature better sensors than front-facing cameras. The Bubble offers similar functionality to the recently announced Insta360 Snap with a screen providing live camera previews so you can properly frame shots, plus remote camera controls and a shutter button. What sets the Bubble apart is a thinner design, wireless capabilities up to nearly 33 feet away, and, unfortunately, limited device compatibility. The Oppo Bubble is currently available in China for 499 yuan, or around $73, but the company hasn’t confirmed if the accessory will see a global release. It features a round AMOLED touchscreen with a 550mAh battery, but it’s only seven-millimeters thick. The company hasn’t specified the Bubble’s estimated battery life, but it needs to be charged through a USB-C port on the bottom instead of powering up wirelessly when attached to the back of a phone. Some Oppo devices do support wireless charging, but the company hasn’t released any with built-in magnetic rings for attaching accessories. To dock the Bubble to an Oppo phone, you’ll need to add a magnetic case. …