OnePlus 15 vs Xiaomi 15 Ultra

OnePlus 15

The Hasselblad-tuned triple camera system delivers natural colors and excellent portraits, with a 50MP main, 50MP ultrawide, and 50MP 3x periscope telephoto.

• Hasselblad color science produces warm, natural tones that look true to life — portraits are particularly impressive with excellent skin tone rendering and bokeh
• The 3x periscope telephoto delivers sharp, detailed shots and the 50MP sensor means cropping to 6x still produces usable results
• In challenging mixed-lighting conditions, HDR processing can occasionally produce artifacts and inconsistent exposure between the three lenses
• Video recording at 4K60 is excellent with effective stabilization, though Dolby Vision HDR video still trails iPhone in dynamic range

Xiaomi 15 Ultra

The crown jewel — a triple Leica camera system with a 1-inch main sensor, 200MP telephoto, and 50MP ultrawide that redefines smartphone photography.

• The 1-inch main sensor captures more light and detail than any competing smartphone camera — photos have a depth and quality that approaches dedicated cameras
• 200MP telephoto with 4.3x optical zoom produces incredibly detailed zoom shots that rival the Galaxy S25 Ultra's 5x periscope
• Leica color science produces warm, film-like tones with natural skin rendering that photographers love
• Video stabilization is the best on any Android phone, though color consistency and dynamic range in video still trail the iPhone

OnePlus 15

The Snapdragon 8 Elite Gen 2 paired with up to 16GB RAM delivers the fastest Android performance available, with excellent thermal management maintaining sustained speeds.

• Snapdragon 8 Elite Gen 2 delivers top-of-class benchmark scores with Geekbench multi-core exceeding 10,000 — the fastest Android phone tested
• Thermal management is excellent — sustained gaming performance remains high even after extended sessions, with minimal throttling
• 16GB RAM ensures app retention is excellent — you can return to apps hours later and find them exactly where you left them

Xiaomi 15 Ultra

Snapdragon 8 Elite with 16GB RAM delivers the fastest Android performance available with excellent thermal management.

• Snapdragon 8 Elite with 16GB RAM makes this one of the fastest phones tested — no app or game can slow it down
• Liquid cooling system keeps sustained performance high with minimal throttling during extended gaming sessions
• 16GB RAM ensures smooth multitasking with dozens of apps in memory and efficient AI processing

OnePlus 15

The 6,000mAh battery provides exceptional endurance, and 100W SUPERVOOC wired charging fills the tank from empty to full in about 25 minutes.

• The 6,000mAh battery comfortably lasts into a second day with moderate use — one of the largest batteries in any mainstream flagship
• 100W SUPERVOOC charges from 0 to 100% in approximately 25 minutes — the fastest wired charging in its class and a genuine lifestyle feature
• 50W wireless charging is also available, reaching full in about an hour — faster than most competitors' wired charging speeds

Xiaomi 15 Ultra

A 5,500mAh battery with 90W wired and 50W wireless charging delivers both excellent endurance and class-leading charging speeds.

• 90W wired charging fills the 5,500mAh battery from 0 to 100% in about 35 minutes — among the fastest in any flagship
• Battery easily lasts a full day of heavy use including intensive camera work and gaming
• 50W wireless charging is fast enough to replace wired charging for most daily use scenarios

OnePlus 15

OxygenOS 15 based on Android 15 delivers a clean, fast experience with useful AI features, though it has moved closer to ColorOS in recent iterations.

• OxygenOS 15 remains one of the cleanest Android skins with fast animations, minimal bloat, and thoughtful customization options
• AI features include smart photo editing, real-time translation, and an AI-powered assistant that handles routine tasks efficiently
• 4 years of Android OS updates and 5 years of security patches is respectable but trails Samsung and Google's 7-year commitment

Xiaomi 15 Ultra

HyperOS 2 on Android 15 is feature-rich but divisive — powerful customization options are offset by ads and bloatware in some regions.

• HyperOS 2 is more polished than MIUI, with smooth animations, useful sidebar multitasking, and deep customization
• Pre-installed apps and occasional ads in system UI detract from the premium experience in some regional variants
• Four years of OS updates and five years of security updates — decent but short of Samsung and Google seven-year commitments