Look Ma! Oppo's prototype handset has no buttons, no ports
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Remember the Meizu Zero? This was a phone unveiled at the start of this year that had no buttons or ports. Charging was handled by an 18W Wireless charger that came out of the box and virtual buttons on the side of the phone replaced the real thing. While the Zero was a concept phone, Meizu tried to crowdfund production of the device on Indiegogo and attempted to raise $100,000 by charging $1,299 for each unit. But the company fell short after raising $45,000 and the project was scrapped.

Oppo's no button, no port prototype uses an under-display selfie camera
Oppo doesn't plan to offer this phone but does plan on employing some of the features found on the device on its new handsets produced over the next few years. This past summer, Oppo disseminated a tweet showing the under-display selfie snapper in action. Who knows? By 2022 we could see a production version of Oppo's button-free, port-free handset in the marketplace. And if you live in America, there is hope that such a device might be available in the country; Oppo said earlier this year that the manufacturer does have plans to come to America.

Oppo's prototype uses a 30W wireless charger since it has no charging ports
Things that are NOT allowed: