Xiaomi 15 Ultra

GSMTechTok analysis

Who it's for

The 15 Ultra is for a buyer who wants one of the very best camera phones available and is willing to accept underwhelming battery longevity and a convoluted software experience to get it. TechRadar's verdict calls it one of the best camera phones around, backed by a gorgeous display and excellent performance. It's a strong fit for anyone specifically drawn to Xiaomi's Leica partnership and genuinely novel telephoto hardware — GSMArena's own review notes the 200MP periscope's 1/1.4-inch sensor and 100mm equivalent focal length isn't the same setup any rival offers, including vivo's own X100 Ultra and X200 Pro. It's a weaker fit for anyone outside Xiaomi's core markets, since TechRadar's review flags limited international availability directly as a real, disclosed con.

Standout features

The telephoto system is the clearest differentiator — GSMArena's review calls the 200MP periscope's sensor and lens pairing industry-leading, offering genuine 4.3x optical reach that opens up compositions most phone cameras can't match. The main camera remains one of the last true 1-inch sensors in the segment, still paired with Leica's Summilux-branded optics. Performance and display quality both earned direct, uncomplicated praise from TechRadar, and Notebookcheck's review adds that the combination of top-tier performance, a bright screen, and fast charging technologies delivers everything expected of a genuine flagship. Charging speed is a real strength too — 90W wired and 80W wireless both significantly outpace what most rivals in the segment offer, letting the large battery top up quickly despite its size.

Trade-offs

Battery longevity is the most direct, repeated disappointment across reviews — TechRadar's own pros-and-cons list states plainly that it expected better battery life, a real letdown given the phone's size and price. The global version compounds this: Notebookcheck's review notes it ships with a smaller cell than the 6,000mAh unit sold in China, a real, disclosed regional reduction. Software is a second, consistently flagged friction point — TechRadar describes HyperOS as feature-rich but convoluted, a genuine usability complaint rather than a preference quibble. Notebookcheck's testing found two further, specific technical gaps: no UWB support, a feature several rivals now include, and SoC throttling under sustained load despite the Snapdragon 8 Elite's strong benchmark numbers. And at 226-229g depending on finish, TechRadar notes it's one of the heaviest candy-bar flagships on the market, a real trade-off for the camera hardware packed inside.