14T vs 15 Ultra

Phone 1

Phone 2

Winner

Xiaomi 14T

Lifespan decides this one: the 14T is supported until Sep 2029 at $9.63 per month of safe use, while the 15 Ultra runs out in Mar 2030 ($30.26/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 14T 71 · 15 Ultra 65 — 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 15 Ultra $1350

Safe to buy$30.26/mo

2025◆ Buy-by Mar 20282030

Category by category

Display

14T 8015 Ultra 100

The 15 Ultra's screen is the better one — 6.73-inch 2k (1440×3200) ltpo amoled, 1–120hz, up to 3200 nits peak.

Performance

14T 7315 Ultra 98

The 15 Ultra's Qualcomm Snapdragon 8 Elite (3nm) is simply the faster chip.

Camera

14T 7915 Ultra 96

The 15 Ultra has the stronger camera system (4 real rear lenses vs 3).

Battery

14T 8015 Ultra 88

5,410mAh vs 5,000mAh — the 15 Ultra lasts longer between charges.

Software longevity

14T 4715 Ultra 53

The 15 Ultra is supported until Mar 2030 — 5 months longer than the 14T.

Value

14T 7115 Ultra 65

Overall value goes to the 14T at $9.63 per month of safe use.

Full spec table

Spec	14T	15 Ultra
Price (street)	$380	$1350
Display	6.67-inch AMOLED, 2712×1220 (446 ppi), up to 144Hz, up to 4000 nits peak	6.73-inch 2K (1440×3200) LTPO AMOLED, 1–120Hz, up to 3200 nits peak
Chipset	MediaTek Dimensity 8300-Ultra	Qualcomm Snapdragon 8 Elite (3nm)
RAM	12GB	16GB
Storage	256GB/512GB	512GB/1TB
Battery	5,000 mAh	5,410 mAh
Charging	67W wired	90W wired, 80W wireless
Rear cameras	50MP main (Leica, Sony IMX906, OIS), 50MP telephoto 2x (50mm), 12MP ultra-wide (120° FOV)	50MP main, 50MP ultra-wide, 50MP telephoto (70mm floating), 200MP periscope telephoto
Dimensions	160.5 × 75.1 × 7.80 mm	161.3 × 75.3 × 9.35 mm
Weight	195 g	226 g
Water resistance	IP68	IP68
Supported until	Sep 2029	Mar 2030

14T full verdict →15 Ultra full verdict →Longevity master board →

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