Summary
The Xiaomi 15T is a mid-range Android with genuinely impressive hardware — a bright 6.83-inch AMOLED, IP68, Dimensity 8400 Ultra, and Leica-tuned cameras — that punches above its price point, especially after recent discounts bringing it under €400. Reddit sentiment is broadly positive on hardware but consistently critical of HyperOS, with complaints ranging from ads (outside EU) to bugs introduced by the HyperOS 3 update. Battery life divides users: some report excellent all-day endurance, others struggle to make it to evening, particularly after the OS 3 upgrade. It's a phone best suited for buyers who prioritize display quality and camera versatility and are willing to spend a few minutes taming the software.