Poco F7 Ultra vs Xiaomi 15

Poco F7 Ultra

The 6.67-inch QHD+ OLED is one of the brightest panels on the market at 3,200 nits peak, with sharp 1440x3200 resolution and 120Hz refresh rate. GSMArena noted it was the third-brightest phone they had tested at the time. The lack of LTPO technology is the main shortcoming at this tier.

• QHD+ OLED at 3,200 nits peak brightness — third-brightest phone GSMArena had tested at review time
• Sharp 1440x3200 resolution at 120Hz with excellent viewing angles and color accuracy
• Not an LTPO panel — cannot scale down to 1Hz like true flagship displays, affecting battery efficiency

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

Poco F7 Ultra

The Snapdragon 8 Elite with VisionBoost D7 GPU delivers raw benchmark scores that exceed even the Xiaomi 15 Ultra in some tests, with an AnTuTu score around 2.63 million. Lightning-fast OS navigation and multitasking. However, thermal management is aggressive — the aluminum frame reaches 45°C+ during extended gaming.

• Snapdragon 8 Elite with VisionBoost D7 GPU — AnTuTu ~2.63 million, exceeding even Xiaomi 15 Ultra in some benchmarks
• Handles any game at maximum graphical settings with lightning-fast app launches and multitasking
• Thermal management is aggressive — frame reaches 45°C+ during extended gaming at under 20°C ambient

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

Poco F7 Ultra

The first Poco phone with a telephoto camera (50MP, 2.5x optical zoom) is a landmark addition. The 50MP main sensor delivers nicely detailed images with excellent dynamic range, and Creative Bloq called it potentially "the best value camera phone of 2025." However, the 32MP ultrawide delivers muddy results, the selfie camera lacks autofocus, and video recording options are limited.

• First Poco phone with a telephoto (50MP, 2.5x optical) — close-focusing enables excellent macro-style shots
• 50MP main sensor delivers nicely detailed images — "potentially even better than Samsung S25 Ultra" in certain scenarios
• 32MP ultrawide delivers comparatively muddy and flat results versus the main sensor
• Camera system described as "inconsistent" — selfie lacks autofocus, video tops out at 4K@60fps

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

Poco F7 Ultra

The 5,300mAh battery provides reliable all-day endurance with 7-8 hours screen-on time. The standout is 120W wired charging that fills the battery from flat in approximately 30 minutes, plus 50W wireless charging support. Mark Ellis Reviews called the battery life "staggeringly good" and "insane."

• 120W wired charging fills from 0-100% in approximately 30 minutes — class-leading speed
• Battery life described as "staggeringly good" and "insane" — reliable 7-8 hours SOT
• 50W wireless charging included — a rarity at this price point

Xiaomi 15

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
• 5,400mAh silicon-carbon battery is a massive upgrade from the Xiaomi 14's 4,610mAh — real-world 7-8 hours SOT
• 90W wired charging does 0-100% in about 50 minutes; 50W wireless charging also supported

Poco F7 Ultra

Launched with HyperOS 2.0 on Android 15, with HyperOS 3 (Android 16) already rolling out. Performance optimization for the Snapdragon 8 Elite is solid. However, HyperOS ships with embedded ads in system apps, ~40 unnecessary bloatware apps in the global version, and debloating via ADB is strongly recommended.

• Already receiving HyperOS 3 / Android 16 update — relatively fast update cadence
• HyperOS ships with embedded ads in system apps (Security, Music, Browser, Themes) and ~40 bloatware apps
• Debloating via ADB commands is strongly recommended — ads may return after system updates

Xiaomi 15

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
• 4 major OS updates + 5-6 years of security patches — competitive but behind Samsung's 7-year commitment
• Significant bloatware with 193+ identifiable packages — some system apps contain advertisements