After a China-first launch in February, the Xiaomi 15 Ultra is finally available in global markets. This is Xiaomi's most aggressive play for the premium segment yet — and the Leica camera system gives it a genuine claim to the photography crown.

Leica Summilux quad cameras

The camera system is co-engineered with Leica and uses the Summilux branding (Leica's highest-tier lens designation):

  • Main: 50MP Sony LYT-900, 1-inch sensor, f/1.63 Summilux lens, OIS
  • Ultrawide: 50MP, f/2.0, 128-degree field of view
  • Telephoto 1: 50MP periscope, 3x optical
  • Telephoto 2: 200MP periscope, 5x optical, f/2.6

Yes, that is four rear cameras, including two periscope telephoto lenses at different focal lengths. The 1-inch main sensor captures extraordinary detail, and Leica's color science gives images a signature film-like quality that Samsung and Apple do not replicate. Two Leica color profiles are available: Leica Authentic (true-to-life) and Leica Vibrant (punchy, saturated).

Battery and charging: a new standard

The 6,000mAh silicon-carbon battery is the largest in any flagship phone currently on the market. Xiaomi rates it for over 15 hours of video playback. Charging speeds are equally impressive:

  • 90W wired: 0-100% in 30 minutes
  • 50W wireless: 0-100% in 50 minutes
  • 10W reverse wireless charging

In our early testing, the 15 Ultra consistently lasted a full day and a half of mixed use — comfortably more than any competing flagship including the Galaxy S25 Ultra.

Performance and display

  • Chipset: Snapdragon 8 Elite
  • RAM: 16GB LPDDR5X
  • Storage: 256GB / 512GB / 1TB UFS 4.0
  • Display: 6.73-inch 2K LTPO AMOLED, 1-120Hz, 3,200 nits peak

The display is one of the best in the industry — sharp, color-accurate, and blindingly bright outdoors. The in-display fingerprint reader is fast and accurate.

HyperOS 2.5

Xiaomi's HyperOS 2.5 is a significant improvement over MIUI. The interface is cleaner, bloatware is minimal in global ROMs, and the cross-device ecosystem (linking Xiaomi tablets, watches, and laptops) is genuinely useful. Xiaomi promises 4 years of OS updates and 5 years of security patches.

Global pricing

  • 256GB: $1,099
  • 512GB: $1,249
  • 1TB: $1,399

The Xiaomi 15 Ultra competes head-on with the Samsung Galaxy S25 Ultra and Apple iPhone 16 Pro Max. At $100 less than either competitor, it offers more camera hardware and a bigger battery. See our Xiaomi 15 Ultra product page for full specs.