13 vs 15T

Phone 1

Phone 2

Winner

Xiaomi 15T

Lifespan decides this one: the 15T is supported until Sep 2030 at $9.73 per month of safe use, while the 13 runs out in Dec 2027 ($22.19/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 13 64 · 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 13 $400

Buy with care$22.19/mo

2022◆ Buy-by Dec 20252027

Xiaomi 15T $500

Safe to buy$9.73/mo

2025◆ Buy-by Sep 20282030

Category by category

Display

13 7015T 70

Both displays are effectively the same class.

Performance

13 8515T 78

The 13's Qualcomm Snapdragon 8 Gen 2 is simply the faster chip.

Camera

13 7915T 79

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

Battery

13 7015T 90

5,500mAh vs 4,500mAh — the 15T lasts longer between charges.

Software longevity

13 2115T 61

The 15T is supported until Sep 2030 — 33 months longer than the 13.

Value

13 6415T 70

Overall value goes to the 15T at $9.73 per month of safe use.

Full spec table

Spec	13	15T
Price (street)	$400	$500
Display	6.36-inch AMOLED, 2400 x 1080, 120Hz	6.83-inch AMOLED, 2772x1280, 144Hz
Chipset	Qualcomm Snapdragon 8 Gen 2	MediaTek Dimensity 8400-Ultra
RAM	8GB/12GB	12GB
Storage	128GB/256GB/512GB	256GB/512GB
Battery	4,500 mAh	5,500 mAh
Charging	67W wired, 50W wireless	67W wired
Rear cameras	50MP main, 12MP ultra-wide, 10MP telephoto 3.2x	50MP main, 50MP telephoto 2x, 12MP ultra-wide
Dimensions	152.8 × 71.5 × 8.0 mm	163.2 × 78.0 × 7.5 mm
Weight	189 g	194 g
Water resistance	IP68	IP68
Supported until	Dec 2027	Sep 2030

13 full verdict →15T 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.