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Xiaomi 18 Fold Launched: First XRing O3 Chip, Starting at 10,999 Yuan ​

If you are tracking the 2026 foldable phone market, Xiaomi's September 7 launch event is arguably this week's biggest tech story: the first "mid-fold" form factor, an in-house XRing O3 chip, a 200MP Leica triple camera, and a 6,000mAh battery for 10,999 yuan. This post is both a Xiaomi 18 Fold spec sheet and a buying reference—you can scan the table and highlight breakdowns below to quickly decide if it is worth buying.

Why the Xiaomi 18 Fold Is Worth Watching ​

  • New form factor: A "mid-fold" design with a 5.38-inch cover display and a 7.58-inch inner screen, measuring just 5.02mm thin when unfolded and weighing 219g—lighter than the Samsung Galaxy Z Fold 8.
  • In-house silicon: The first device to ship with Xiaomi's XRing O3 3nm flagship SoC, a deca-core design with an Arm G2-Ultra GPU, marking Xiaomi's entry into self-designed flagship foldable chips.
  • Leica imaging: A 200MP main camera + 50MP periscope telephoto (3.5x optical zoom) + 50MP ultrawide, supporting 8K recording and full-focal-length 4K Dolby Vision.

Xiaomi 18 Fold Core Specs at a Glance ​

Here is a summary of the key specifications:

yaml
---
model: Xiaomi 18 Fold
chip: XRing O3 (3nm, deca-core, Arm G2-Ultra GPU)
display_outer: 5.38" LTPO AMOLED, 120Hz, 4000 nits
display_inner: 7.58" AMOLED Pol-less, 120Hz, 2364x1672
camera: 200MP main + 50MP tele (3.5x) + 50MP ultrawide
battery: 6000mAh, 67W wired, 50W wireless
storage: 256GB/512GB/1TB UFS 4.1
ram: 12GB/16GB (top config LPDDR6)
os: Android 17, HyperOS 4
price: 10,999 yuan (~$1,540) starting
weight: 219g
thickness: 5.02mm (unfolded) / 10.68mm (folded)
---
  • chip: The XRing O3 uses TSMC's 3nm process, with a deca-core CPU up to 4.35GHz and an Arm G2-Ultra NX MC16 GPU for strong AI performance.
  • display_outer: A 5.38-inch LTPO AMOLED cover display with 120Hz refresh rate, 4,000-nit peak brightness, and Xiaomi Dragon Crystal Glass 3.0.
  • display_inner: A 7.58-inch AMOLED inner display using Pol-less low-power technology, 2364x1672 resolution, with HDR10+ and Dolby Vision support.
  • camera: Leica-tuned triple setup—200MP f/1.7 main, 50MP periscope with 3.5x optical and 7x optical-quality zoom, and 50MP f/2.4 ultrawide.
  • battery: A 6,000mAh Jinsha River laminated battery with 20% silicon content, 920Wh/L energy density, supporting 67W wired and 50W wireless fast charging.
  • price: Four configurations at 10,999/11,999/12,999/14,999 yuan, plus a Ceramic Special Edition at 15,999 yuan (limited to 1,500 units globally).

Foldable Experience and Interaction Highlights ​

Xiaomi invested heavily in foldable interaction, with three areas standing out:

  1. HyperOS 4 optimizations: Over 200 foldable-specific optimizations for opening/closing interactions and split-screen multitasking, making the logic closer to daily usage habits.
  2. A4-ratio inner screen: The inner display uses a √2:1 aspect ratio matching standard A4 paper, providing higher screen utilization for document reading and web browsing.
  3. IP58/IP59 rating: Dust resistance and high-pressure water jet protection—a rare durability rating among foldables, offering greater peace of mind for daily use.

These details show that the Xiaomi 18 Fold is not just a spec dump—Xiaomi systematically refined the folding experience from interaction logic, screen ratio, and durability.

Pre-Purchase Checklist ​

  • [ ] Confirm budget: Starts at 10,999 yuan; top ceramic edition is 15,999 yuan; evaluate if you need 1TB storage
  • [ ] Check availability: First-weekend sales results are out; some regions may still require flash sales
  • [ ] Pick a color: Available in Black, Nishino Red, and Warm Gold White; ceramic special edition is pink, limited to 1,500 units
  • [ ] Assess use case: The 7.58-inch inner screen is great for multitasking; one-handed use takes adjustment
  • [ ] Review warranty: Foldable repair costs are high; consider purchasing screen-break insurance
  • [ ] Compare alternatives: Apple's iPhone Ultra starts around 14,085 yuan; Samsung's Galaxy Z Fold 8 is already on sale

Further Reading and Authoritative Sources ​

Before making a purchase decision, compare the Xiaomi 18 Fold against rival foldables from Samsung and Apple. For authoritative external references, GSMArena's full spec page and Xiaomi's official product page provide comprehensive hardware parameters and official pricing.

Product Images and Media ​

All images in this post are written into Markdown as links, using the standard image syntax:

markdown
![Xiaomi 18 Fold foldable phone official render](https://fdn2.gsmarena.com/vv/bigpic/xiaomi-18-fold.jpg)

Tips:

  • Write descriptive alt text in the brackets: good for SEO and for screen readers when images fail to load.
  • Write the address in the parentheses: use a /-prefixed absolute path for local images and a full https:// URL for external images.
  • Keep it pure Markdown—avoid inline HTML <img> tags—for portability and consistent rendering.

Structured Data ​

This site automatically injects BlogPosting structured data (JSON-LD) for each post at build time, including title, publish date, author, and language. You don't maintain it manually—just write clear title, date, and description. For trending tech topics like the Xiaomi 18 Fold, search engines prioritize pages with strong freshness signals and complete structured data, also benefiting Google AdSense ad targeting.

Conclusion ​

The Xiaomi 18 Fold establishes a strong competitive position in the foldable phone market with its 10,999-yuan starting price, in-house XRing O3 chip, and Leica triple camera. Compared to Apple's iPhone Ultra at roughly 14,085 yuan, Xiaomi holds a clear value advantage. HyperOS 4's 200-plus foldable-specific optimizations also show Xiaomi invested seriously in software. Combined with IP58 protection and a 6,000mAh battery, this device is worth serious consideration. Now go compare your next foldable phone.