Galaxy S23 Ultra vs Redmi K80

Phone 1

Phone 2

Winner

Xiaomi Redmi K80

Lifespan decides this one: the Redmi K80 is supported until Nov 2029 at $8.59 per month of safe use, while the Galaxy S23 Ultra runs out in Feb 2028 ($16.94/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Galaxy S23 Ultra 76 · Redmi K80 79 — methodology

The lifespan decider

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

Samsung Galaxy S23 Ultra $339

Buy with care$16.94/mo

2023◆ Buy-by Feb 20262028

Xiaomi Redmi K80 $355

Safe to buy$8.59/mo

2024◆ Buy-by Nov 20272029

Category by category

Display

Galaxy S23 Ultra 90Redmi K80 80

The Galaxy S23 Ultra's screen is the better one — 6.8-inch dynamic amoled 2x, qhd+, ltpo 1–120hz, 1750 nits peak.

Performance

Galaxy S23 Ultra 85Redmi K80 92

The Redmi K80's Qualcomm Snapdragon 8 Gen 3 (4nm) is simply the faster chip.

Camera

Galaxy S23 Ultra 96Redmi K80 67

The Galaxy S23 Ultra has the stronger camera system (4 real rear lenses vs 2).

Battery

Galaxy S23 Ultra 80Redmi K80 100

6,550mAh vs 5,000mAh — the Redmi K80 lasts longer between charges.

Software longevity

Galaxy S23 Ultra 24Redmi K80 49

The Redmi K80 is supported until Nov 2029 — 21 months longer than the Galaxy S23 Ultra.

Value

Galaxy S23 Ultra 76Redmi K80 79

Pound for pound, these two are equally good deals.

Full spec table

Spec	Galaxy S23 Ultra	Redmi K80
Price (street)	$339	$355
Display	6.8-inch Dynamic AMOLED 2X, QHD+, LTPO 1–120Hz, 1750 nits peak	6.67-inch AMOLED, 2K, 120Hz, 3200 nits peak
Chipset	Snapdragon 8 Gen 2 for Galaxy	Qualcomm Snapdragon 8 Gen 3 (4nm)
RAM	8GB/12GB	12GB/16GB
Storage	256GB/512GB/1TB	256GB/512GB/1TB
Battery	5,000 mAh	6,550 mAh
Charging	45W wired, 15W wireless, 4.5W reverse wireless	90W wired, 30W wireless
Rear cameras	200MP main, 12MP ultra-wide, 10MP telephoto 3x, 10MP periscope 10x	50MP main, 8MP ultra-wide, 2MP macro
Dimensions	163.4 × 78.1 × 8.9 mm	160.3 × 75.0 × 8.0 mm
Weight	234 g	206 g
Water resistance	IP68	IP68
Supported until	Feb 2028	Nov 2029

Galaxy S23 Ultra full verdict →Redmi K80 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.