OnePlus 13R vs Xiaomi 15

OnePlus 13R

The 6.78-inch LTPO AMOLED display delivers 120Hz, 2780x1264 resolution, and 4,500 nits peak brightness — one of the best screens at this price.

• LTPO AMOLED panel delivers sharp, vibrant visuals with excellent color reproduction across sRGB and DCI-P3 gamuts
• Real-world auto brightness of around 1,223 nits provides comfortable outdoor visibility in direct sunlight

Xiaomi 15

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
• Ultra-narrow 1.38mm bezels with excellent color accuracy in Original Color PRO profile
• OLED smear visible at lower brightness levels (0-70% range) — a recurring user complaint

OnePlus 13R

Main camera and new 2x telephoto deliver solid results, but the 8MP ultrawide is a consistent weak point that drags down the system.

• The 50MP main camera produces sharp daylight stills with wide dynamic range and vibrant-but-accurate colors
• The new 50MP 2x telephoto is a significant upgrade over the old macro lens, delivering sharp images with nice colors
• The 8MP ultrawide is the clear weakness — soft, lacking detail, with limited dynamic range that reviewers universally criticize
• Video recording is limited: 4K restricted to select cameras with mediocre stabilization compared to the competition

Xiaomi 15

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
• 2.6x optical telephoto is a meaningful upgrade over the Xiaomi 14 — sharp and versatile
• Ultrawide camera is the weakest link — subpar quality, no autofocus, noticeably more noise in low light
• DxOMark camera score of 146 — good but not class-leading among 2025 flagships

OnePlus 13R

Snapdragon 8 Gen 3 delivers flagship-tier burst performance, but lab testing reveals significant thermal throttling under sustained workloads.

• Snapdragon 8 Gen 3 delivers exceptional burst performance, making it one of the most powerful phones at this price
• Day-to-day performance is silky smooth — no lag, hiccups, or slowdowns with OxygenOS optimizations
• Thermal throttling is a concern: 3DMark tests show GPU stability of only 54% with CPU throttling to 64% under extended load

Xiaomi 15

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
• Thermal throttling is a real issue — fails to complete 3DMark GPU stress tests and gets uncomfortably hot
• CPU throttles to 72-77% of peak under sustained load — compact chassis limits cooling capacity