PhoneLifespan

14T vs 15T

vs

It depends

Too close to call outright

These two are within 1 point overall — it genuinely depends on price on the day. The 15T edges both longevity and performance, so prefer it when prices are close.

Value Score: 14T 71 · 15T 70 methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Xiaomi 14T $380
Safe to buy$9.63/mo
2024◆ Buy-by Sep 20272029
Xiaomi 15T $500
Safe to buy$9.73/mo
2025◆ Buy-by Sep 20282030

Category by category

Display
14T 8015T 70

The 14T's screen is the better one — 6.67-inch amoled, 2712×1220 (446 ppi), up to 144hz, up to 4000 nits peak.

Performance
14T 7315T 78

The 15T's MediaTek Dimensity 8400-Ultra is simply the faster chip.

Camera
14T 7915T 79

Camera systems are comparable on paper — pick by sample photos.

Battery
14T 8015T 90

5,500mAh vs 5,000mAh — the 15T lasts longer between charges.

Software longevity
14T 4715T 61

The 15T is supported until Sep 2030 — 12 months longer than the 14T.

Value
14T 7115T 70

Pound for pound, these two are equally good deals.

Full spec table
Spec14T15T
Price (street)$380$500
Display6.67-inch AMOLED, 2712×1220 (446 ppi), up to 144Hz, up to 4000 nits peak6.83-inch AMOLED, 2772x1280, 144Hz
ChipsetMediaTek Dimensity 8300-UltraMediaTek Dimensity 8400-Ultra
RAM12GB12GB
Storage256GB/512GB256GB/512GB
Battery5,000 mAh5,500 mAh
Charging67W wired67W wired
Rear cameras50MP main (Leica, Sony IMX906, OIS), 50MP telephoto 2x (50mm), 12MP ultra-wide (120° FOV)50MP main, 50MP telephoto 2x, 12MP ultra-wide
Dimensions160.5 × 75.1 × 7.80 mm163.2 × 78.0 × 7.5 mm
Weight195 g194 g
Water resistanceIP68IP68
Supported untilSep 2029Sep 2030

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.