Xiaomi 15

A premium compact flagship at 152.3 x 71.2 x 8.08mm and 191g with an aviation-grade aluminum frame and IP68 water resistance. It looks and feels genuinely premium, though several reviewers noted it's almost identical to the Xiaomi 14.

• One of the most comfortable compact flagships to hold — 191g with excellent in-hand ergonomics— GSMArena
• IP68 water resistance and aviation-grade aluminum frame deliver genuine durability— Tech Advisor
• Very iterative design over the Xiaomi 14 — multiple reviewers asked "have I seen you before?"— PhoneArena

The 6.36-inch 1.5K LTPO OLED is sharp, vibrant, and incredibly bright at 3,200 nits peak (tested up to 3,593 nits HDR). Ultra-narrow 1.38mm bezels and high-frequency PWM dimming above 3,000Hz round out an excellent display package, though OLED smear at lower brightness is a noted concern.

• Peak brightness tested at 3,593 nits in HDR — among the brightest compact phone displays available— NotebookCheck
• Ultra-narrow 1.38mm bezels with excellent color accuracy in Original Color PRO profile— GSMArena
• OLED smear visible at lower brightness levels (0-70% range) — a recurring user complaint— Reddit r/Xiaomi

The Snapdragon 8 Elite with 12GB RAM delivers flagship-tier performance that's smooth and snappy for everyday use, gaming, and multitasking. However, the compact body struggles to dissipate heat under sustained loads, causing notable thermal throttling during extended gaming sessions.

• Snapdragon 8 Elite scores ~2,990 single-core and ~9,114 multi-core on Geekbench 6 — genuinely fast— NotebookCheck
• Thermal throttling is a real issue — fails to complete 3DMark GPU stress tests and gets uncomfortably hot— PhoneArena
• CPU throttles to 72-77% of peak under sustained load — compact chassis limits cooling capacity— NextPit

The triple 50MP Leica system shines with its main sensor and improved 2.6x telephoto, earning a DxOMark score of 146. Leica color profiles produce natural, pleasing images with excellent dynamic range. The ultrawide camera is the clear weakness, with noticeably more noise in low light and no autofocus.

• 50MP main Leica Summilux camera delivers excellent photo quality with natural colors and strong dynamic range— GSMArena
• 2.6x optical telephoto is a meaningful upgrade over the Xiaomi 14 — sharp and versatile— TechRadar
• Ultrawide camera is the weakest link — subpar quality, no autofocus, noticeably more noise in low light— Android Authority
• DxOMark camera score of 146 — good but not class-leading among 2025 flagships— DXOMARK

A standout category for the Xiaomi 15. The 5,400mAh silicon-carbon battery is a huge upgrade from the Xiaomi 14's 4,610mAh, delivering 16+ hours of active use in GSMArena's tests and consistently 7-8 hours of screen-on time. 90W wired charging goes from 0-100% in about 50 minutes.

• GSMArena Active Use Score of 16:28 hours — excellent endurance for a compact flagship— GSMArena
• 5,400mAh silicon-carbon battery is a massive upgrade from the Xiaomi 14's 4,610mAh — real-world 7-8 hours SOT— NotebookCheck
• 90W wired charging does 0-100% in about 50 minutes; 50W wireless charging also supported— Tom's Guide

HyperOS 2 based on Android 15 is fast and fluid with snappy animations and useful AI features. Xiaomi promises 4 major OS updates and 5-6 years of security patches. However, bloatware remains a persistent concern with 193+ removable packages identified, and some system apps contain advertisements.

• HyperOS 2 is fast, fluid, and full of character — one of the more polished Android skins in 2025— GSMArena
• 4 major OS updates + 5-6 years of security patches — competitive but behind Samsung's 7-year commitment— Android Authority
• Significant bloatware with 193+ identifiable packages — some system apps contain advertisements— XDA Forums