Xiaomi Launches Xiaomi 18 Fold: Features Passport-Style Mid-Fold Design, 3nm XRING O3 Silicon, World-First LPDDR6 RAM, and 200MP Leica Optics

Xiaomi has officially launched its next-generation flagship foldable, the Xiaomi 18 Fold, during its Autumn Keynote in China. Replacing the Mix Fold naming scheme, the device introduces a passport-proportioned “mid-fold” form factor designed for comfortable single-handed operation while folded.

The flagship marks a dual milestone for Xiaomi: it is the first smartphone powered by the company’s in-house 3nm XRING O3 mobile platform, and the world’s first commercial device to adopt next-generation LPDDR6 RAM.

30-Second TL;DR

• Core News: Xiaomi officially launched the Xiaomi 18 Fold in China, with open retail sales commencing September 10, 2026.
• Passport Form Factor: Features a 5.38-inch outer cover screen and a 7.58-inch inner folding display, folding into a compact passport footprint measuring just 10.68mm folded and 5.02mm unfolded.
• Proprietary 3nm Silicon: Powered by Xiaomi’s in-house 3nm XRING O3 processor, delivering AnTuTu scores exceeding 5.22 million.
• World-First LPDDR6 Memory: First consumer phone to deploy domestic LPDDR6 RAM, paired with up to 1TB of UFS 4.1 storage.
• Leica Triple Optics: Led by a 200MP primary sensor, 50MP periscope telephoto (3.5x optical), and a 50MP ultra-wide lens.
• Endurance & Charging: Equipped with a 6,000mAh Jinshajiang battery supporting 67W wired and 50W wireless charging.
• Starting Price: Available from 10,999 yuan (~$1,638 / ~₹1,54,775).

“Mid-Fold” Architecture and 4,000-Nit Dual LTPO Screens

The Xiaomi 18 Fold departs from elongated aspect ratios in favor of a wider, passport-inspired geometry:

• Outer Display: A 5.38-inch LTPO OLED screen (1712 × 1168 resolution) protected by Xiaomi Dragon Crystal Glass 3.0. Its wider line profile accommodates an on-screen keyboard that is 8% wider than conventional 6.9-inch slab smartphones.
• Inner Folding Display: Expands into a 7.58-inch 120Hz LTPO OLED canvas with an aspect ratio close to $\sqrt{2}:1$, matching standard paper dimensions. The panel is reinforced by a double-layer Ultra-Thin Glass (UTG) composite.
• Luminance: Both internal and external screens support 1-120Hz dynamic refresh rates, DC dimming, and reach a peak localized brightness of 4,000 nits.
• Structural Durability: Built around an upgraded Dragon Bone Hinge and an aerospace-grade 7-series aluminum frame, offering 1.2-meter drop resistance and IP68 water resistance.

3nm XRING O3 Silicon and World’s First LPDDR6 Memory

The 18 Fold serves as the primary mobile showcase for Xiaomi’s proprietary silicon program:

• Deca-Core Compute: Fabricated on TSMC’s advanced 3nm process, the XRING O3 integrates an all-big-core layout (two ARM C1-Ultra cores at 4.35GHz, four C1-Premium cores at 3.68GHz, and four C1-Pro cores at 3.15GHz) alongside dual SME2 acceleration units. Multi-core compute performance jumps by 60% while reducing power consumption by 25% under medium loads.
• G2-Ultra NX Graphics: The 16-core GPU delivers an 85% boost in graphics rendering alongside a 64% reduction in energy draw.
• Commercial LPDDR6 Debut: Developed in collaboration with Changxin Memory (CXMT), the 18 Fold is the first device to deploy high-bandwidth LPDDR6 RAM, achieving throughput bandwidth up to 113.8 GB/s.
• HyperOS 4 Multitasking: Runs HyperOS 4 on Android 17, supporting up to six active split-screen containers simultaneously and integrating the voice-activated “Super Xiao Ai Inspiration Ball” workflow tool.

Xiaomi 18 Fold: Official Specifications

Feature	Official Specification Details
Inner Display	7.58-inch (1712×1168) 1–120Hz LTPO OLED, Double UTG, 4,000 nits peak
Outer Display	5.38-inch (1712×1168) 1–120Hz LTPO OLED, Dragon Crystal Glass 3.0, 4,000 nits peak
Dimensions (Folded)	117.8 mm × 83.6 mm × 10.68 mm
Dimensions (Unfolded)	117.8 mm × 163.8 mm × 5.02 mm; Weight: 219g
Processor	In-House Xiaomi XRING O3 (3nm, 10-Core up to 4.35GHz)
Memory Standards	12GB / 16GB LPDDR6 RAM with 256GB / 512GB / 1TB UFS 4.1 Storage
Rear Camera System	200MP Main (f/1.7, OIS, Leica Summilux) + 50MP Ultra-Wide + 50MP Periscope (3.5x OIS)
Front Cameras	Dual 16MP Sensors (One Inner Screen, One Outer Cover Screen)
Battery & Charging	6,000mAh Silicon-Carbon Cell; 67W Wired, 50W Wireless, Reverse Charging
Ingress Rating	IP68 Water & Dust Resistance
Operating System	Xiaomi HyperOS 4 (Based on Android 17)

200MP Leica System and 6,000mAh Battery

The rear camera island is co-developed with Leica and houses a full focal-length optical system:

• 200MP Main Sensor: Equipped with customized Leica Summilux optics, an f/1.7 aperture, and hardware Optical Image Stabilization (OIS).
• Auxiliary Lenses: Paired with a 50MP ultra-wide camera (f/2.2) and a 50MP periscope telephoto lens delivering 3.5x optical zoom and 8K video capture.
• 6,000mAh Jinshajiang Battery: Built with high-density silicon-carbon chemistry (20% silicon content, 920 Wh/L energy density), the 6,000mAh dual-cell structure maintains the 5.02mm thin profile while supporting 67W wired fast charging and 50W wireless charging.

Pricing, Ceramic Limited Edition, and Availability

The Xiaomi 18 Fold is available in three standard color options-Nishino Red, Warm White Gold, and Black-alongside a limited Ceramic Edition crafted from lightweight silicon nitride ceramic (capped at 1,500 units globally):

• 12GB + 256GB: 10,999 yuan (~$1,638 / ~₹1,54,775)
• 12GB + 512GB: 11,999 yuan (~$1,787 / ~₹1,68,850)
• 16GB + 512GB: Available across major retail platforms
• 16GB + 1TB Ceramic Limited Edition: 15,999 yuan (~$2,383 / ~₹2,25,135)

Official pre-orders are open in China, with retail availability beginning September 10, 2026, at 10:00 AM local time. International rollout details are expected to follow later this autumn.