Mate X6 vs 15

Phone 1

Phone 2

Winner

Xiaomi 15

Lifespan decides this one: the 15 is supported until Mar 2030 at $16.87 per month of safe use, while the Mate X6 runs out in Dec 2028 ($57.46/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Mate X6 51 · 15 67 — methodology

The lifespan decider

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

Huawei Mate X6 $1700

Buy with care$57.46/mo

2024◆ Buy-by Dec 20262028

Xiaomi 15 $750

Safe to buy$16.87/mo

2025◆ Buy-by Mar 20282030

Category by category

Display

Mate X6 8015 90

The 15's screen is the better one — 6.36-inch crystalres amoled, 2670×1200 (460 ppi), 1–120hz ltpo, up to 3200 nits peak, dolby vision/hdr10+.

Performance

Mate X6 8515 98

The 15's Snapdragon 8 Elite is simply the faster chip.

Camera

Mate X6 7915 79

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

Battery

Mate X6 8215 85

Battery capacities are close enough not to decide this.

Software longevity

Mate X6 3515 53

The 15 is supported until Mar 2030 — 15 months longer than the Mate X6.

Value

Mate X6 5115 67

Overall value goes to the 15 at $16.87 per month of safe use.

Full spec table

Spec	Mate X6	15
Price (street)	$1700	$750
Display	7.93-inch foldable LTPO OLED main (2440x2240, 120Hz) + 6.45-inch LTPO OLED cover (120Hz)	6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+
Chipset	HiSilicon Kirin 9020	Snapdragon 8 Elite
RAM	12GB/16GB	12GB
Storage	256GB/512GB/1TB	256GB/512GB
Battery	5,110 mAh	5,240 mAh
Charging	66W wired, 50W wireless, reverse wireless	90W wired, 50W wireless
Rear cameras	50MP main (variable aperture f/1.0-4.0, OIS), 40MP ultra-wide, 48MP telephoto 4x periscope OIS	50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)
Dimensions	Unfolded 156.0 × 144.1 × 4.6 mm; folded 156.0 × 73.7 × 9.85 mm	152.3 × 71.2 × 8.08 mm
Weight	239 g	191 g
Water resistance	IP68/IP69	IP68
Supported until	Dec 2028	Mar 2030

Mate X6 full verdict →15 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.