Xiaomi 15T review: Dimensity 8400-Ultra value flagship with Leica triple cam.
T-line value Leica.
15T brought Leica-tuned triple cameras and the surprisingly powerful Dimensity 8400-Ultra to $649 — Xiaomi's T-line continuing to be the global value answer to the company's pricier mainline flagships.
01Display
88/100At 88/100 this is one of the strongest display showings among mid-range phones of 2025 — 7 points above the cohort average.
02Camera
84/100At 84/100 this is one of the strongest camera showings among mid-range phones of 2025 — 13 points above the cohort average.
03Performance
84/100At 84/100 this is one of the strongest performance showings among mid-range phones of 2025 — 14 points above the cohort average.
04Battery
86/10086/100 puts it above the 84-point average for mid-range phones of 2025.
05Build
80/10080/100 puts it above the 76-point average for mid-range phones of 2025.
- Leica Summilux triple cam at $649
- 144Hz + 50W wireless + IP68
- Dimensity 8400-Ultra punches above price
- No periscope at this price
- HyperOS 2 still settling
- No 3.5 mm jack
How this review is built: every section score, spec row and comparison on this page comes from SpecEagle's tracked catalogue — scores weight measured specs against the 117-phone cohort of mid-range devices released around the same time. We don't publish invented lab anecdotes. Spot an error? .