Zenfone 11 Ultra 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 Zenfone 11 Ultra runs out in Mar 2028 ($28.56/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Zenfone 11 Ultra 61 · 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.

Asus Zenfone 11 Ultra $600

Buy with care$28.56/mo

2024◆ Buy-by Mar 20262028

Xiaomi 15T $500

Safe to buy$9.73/mo

2025◆ Buy-by Sep 20282030

Category by category

Display

Zenfone 11 Ultra 7015T 70

Both displays are effectively the same class.

Performance

Zenfone 11 Ultra 9215T 78

The Zenfone 11 Ultra's Snapdragon 8 Gen 3 is simply the faster chip.

Camera

Zenfone 11 Ultra 7915T 79

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

Battery

Zenfone 11 Ultra 9015T 90

Battery capacities are close enough not to decide this.

Software longevity

Zenfone 11 Ultra 2515T 61

The 15T is supported until Sep 2030 — 30 months longer than the Zenfone 11 Ultra.

Value

Zenfone 11 Ultra 6115T 70

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

Full spec table

Spec	Zenfone 11 Ultra	15T
Price (street)	$600	$500
Display	6.78-inch flexible E6 AMOLED, FHD+ (1080×2400), 144Hz, 2500-nit peak, 107% DCI-P3	6.83-inch AMOLED, 2772x1280, 144Hz
Chipset	Snapdragon 8 Gen 3	MediaTek Dimensity 8400-Ultra
RAM	12GB/16GB	12GB
Storage	256GB/512GB	256GB/512GB
Battery	5,500 mAh	5,500 mAh
Charging	65W wired (HyperCharge), 15W Qi wireless	67W wired
Rear cameras	50MP main (Sony IMX890 1/1.56-inch, gimbal OIS), 13MP ultra-wide (120-degree), 32MP telephoto 3x (OIS)	50MP main, 50MP telephoto 2x, 12MP ultra-wide
Dimensions	163.8 × 76.8 × 8.9 mm	163.2 × 78.0 × 7.5 mm
Weight	224 g	194 g
Water resistance	IP68	IP68
Supported until	Mar 2028	Sep 2030

Zenfone 11 Ultra 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.