Nothing - Phone (3) vs Xiaomi 15

These two are nearly even on the Mars Score (68.9 vs 69.8). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.

Pick the Phone (3) if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are screen size, promised os updates. The single most decisive one: Screen size — 5.35% more. 6.7 " vs 6.36 ".

Pick the Xiaomi 15 if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are wireless charging, wired charging, antutu, among others. The single most decisive one: Wireless charging — 233.33% more. 50 W vs 15 W.

Both ship with comparable ram, main camera, refresh rate, so those specs do not separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.