OnePlus has launched the OnePlus Open, its first foldable phone. The flagship-class phone has top-end specs, going head-to-head with the Samsung Galaxy Z Fold5 and Google Pixel Fold in both design and features. The phone has a 7.82-inch flexible display inside, protected by Ultra-Thin Glass, with a carbon fiber support structure underneath to reduce the crease at the hinge. The unique "Flexion" hinge is an 8-axis mechanism that uses just 69 parts, compared to the industry average of more than a hundred components. OnePlus claims this improves durability, and has had it tested and certified for a million fold actions. The outer display measures 6.31 inches and is protected by Ceramic Guard, which OnePlus claims is 20% more impact resistant than Corning Gorilla Glass Victus. Both displays are "ProXDR" LTPO AMOLED panels with 2K resolution and 120 Hz refresh. It does sport OnePlus' signature alert slider switch. The Hasselblad rear triple-camera system includes a 48 megapixel main camera with a Sony LYTIA-T808 sensor featuring stacked-pixel technology that boosts light intake. There's also a 64 megapixel telephoto camera with 3x periscope optical zoom and 6x lossless zoom via sensor crop. The wide-angle camera is 48 megapixel and has auto-focus. The Open is powered by a Snapdragon 8 Gen 2 chip paired with 16 GB of RAM and 512 GB of UFS 4.0 storage. The 4,805 mAh battery can be fully charged in just 42 minutes thanks 67-watt fast charging. It has excellent support for T-Mobile's network, good support for Verizon's sub-6 network, and basic support for AT&T. The OxygenOS 13.2 software (based on Android 13) includes Open Canvas, a new interface for large screens with multi-window / split-screen tools and a "desktop-like taskbar". OnePlus will offer the Open in the US in black or green for $1,700. Pre-orders start today with full availability October 26th. Pre-orders include a free pair of OnePlus Buds Pro 2 earbuds, worth $180.