Xiaomi’s 15th-anniversary celebration brought a wave of exciting products, including the Xiaomi 15S Pro, which debuts the all-new self-developed Xuanjie O1 chip. This flagship phone features comprehensive upgrades, both inside and out. Let’s dive into how this new chip performs and explore the other improvements Xiaomi has packed into this device.
Subtle Design Refinements
The Xiaomi 15S Pro offers two colorways: "Starry Sky Blue" and "Longlin Fiber Edition". While its overall design resembles the Xiaomi 15 Pro, subtle details highlight its special anniversary status.
The Longlin Fiber Edition, first seen in the MIX series, features a carbon-fiber-inspired back with a supercar-grade finish. The smooth texture, crafted using ultra-high-temperature and high-pressure stacking technology, balances durability and premium aesthetics.
Notable design touches include a raised flash module next to the camera array, adorned with a "XRING" logo marking the Xuanjie O1 chip. The Longlin Fiber Edition adds a gold-foiled Xiaomi logo for a pop of elegance against its dark, sophisticated backdrop.
The power button on the frame features CNC-milled grooves and a gold-accented "waistline", mirroring the back’s gold logo. Even the front display gets upgrades: a 6.73-inch quad-curved "Equal Depth" screen protected by Xiaomi Longjing Glass 2.0. Using M9 luminescent material, it hits a peak brightness of 3,200 nits and includes an anti-reflective AR film for outdoor clarity.
The Xuanjie O1 chip enhances display performance with zone-based brightness adjustment, optimizing pixel-level details for vivid, true-to-life visuals.
Breakthrough Performance with the Xuanjie O1 Chip
The star of the Xiaomi 15S Pro is its self-developed Xuanjie O1 chip, built on a second-gen 3nm process (shared with the Snapdragon 8 Ultimate and MediaTek Dimensity 9400+). Its architecture includes:
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2x X925 super cores (up to 3.9GHz)
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4x A725 performance cores (3.4GHz)
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2x A725 efficiency cores (1.9GHz)
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2x A529 power-saving cores (1.8GHz)
Benchmark results are staggering:
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AnTuTu: 2.64 million
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Geekbench 6: 3,020 (single-core) / 9,387 (multi-core)
These scores rival Apple’s latest A18 Pro chip.
Gaming Performance
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Genshin Impact (30 mins): Avg. 59.7 FPS, 4.7W power draw (stable, no stutters).
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Honkai: Star Rail (1 hour): Avg. 53.6 FPS, 6.9W power draw (smooth despite gradual frame drops).
The Xuanjie O1’s chip-level low-power design optimizes energy use across scenarios, delivering efficiency unmatched by Snapdragon or MediaTek rivals.
All-Day Battery and Blazing Charging
The 15S Pro packs a 6,100mAh Jinsha River Battery (850Wh/L density). Real-world tests:
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Daily use: 3% drain (30 mins video), 3% (30 mins TikTok), 4% (30 mins browsing).
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Gaming: 9% drain (30 mins Genshin), 30% (1 hour Star Rail).
Charging is equally impressive:
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90W wired + 50W wireless charging (with Surge G1/P3 chips).
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0–100% in 42 mins (37% in 10 mins, 82% in 30 mins).
Camera: Solid, Not Spectacular
The triple-camera setup includes:
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50MP Light Hunter 900 main sensor
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50MP JN1 ultra-wide
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50MP IMX858 telephoto
Sample shots show natural colors and sharp details, though imaging isn’t the phone’s focus.
Extra Features
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UWB support: Auto-detects subway gates for seamless fare payments.
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Xiaomi YU7 connectivity: Unlocks smart car functions (trunk/headlight control).
Verdict
The Xiaomi 15S Pro isn’t a radical redesign, but its Xuanjie O1 chip and anniversary-exclusive touches (XRING branding, Longlin Fiber Edition) deliver emotional and technical value. If you’re curious about Xiaomi’s in-house silicon leap, the 15S Pro is a compelling choice.
