Social media giant Twitter has acquired Quill that experts suggest might let Twitter DMs better compete with other messaging apps. As per GSM Arena, this new acquisition might result in Twitter offering more robust messaging features. For the unversed, Quill is a messaging app for collaboration and communication with teams, one that competed with other productivity messaging platforms like Slack. It focused on keeping messages organized and its notification system was designed to keep notifications to a minimum. Twitter DM is simple and barebones compared to other messaging platforms like Instagram, Facebook Messenger, Discord, and Telegram. This is the first biggest move from Twitter after the recent departure of the company's former CEO Jack Dorsey. He was succeeded by Parag Agrawal, a week ago. As per GSM Arena, Twitter could implement some sort of messaging channels for keeping in touch with large communities of users. With Twitter Blue (Twitter's premium paid-subscription tier), the platform could offer Blue-only messaging features for users with high follower counts. Oppo teases retractable rear camera for phones ahead of Inno Day event Oppo, which has the Inno Day event scheduled next week, has released a brief video hinting at a new type of camera design for smartphones. As per The Verge, the company's "self-developed retractable camera" is shown extending from the phone's body before retracting back inside. The video suggests that the mechanism is waterproof and that it'll automatically retract the camera if the phone is dropped. Unlike pop-up selfie cameras that hide inside a phone until needed, moving the camera back and forth on the Z-axis could have implications for image quality, though Oppo hasn't yet claimed anything about any optical advantages of this design. It doesn't appear to be a zoom lens, given it's marked simply as 50mm, but it could theoretically help improve telephoto performance. The markings on the camera module show that the sensor is 1/1.56 inches and the lens is 50mm-equivalent with an f/2.4 aperture, meaning it should be around 2x longer than the phone's main lens. That's a much bigger sensor than you tend to find behind telephoto lenses, so maybe the extra height allowed by the retracting mechanism is what makes this possible. At Oppo's annual Inno Day event, the company often shows off various concepts and technologies before they're commercially deployed. Last year's event featured a rollable phone and AR glasses. This year, Oppo is holding Inno Day across two days, December 14 and 15.