Galaxy S23 Ultra vs Redmi Note 15 Pro 5G

Phone 1

Phone 2

Winner

Xiaomi Redmi Note 15 Pro 5G

Lifespan decides this one: the Redmi Note 15 Pro 5G is supported until Jan 2030 at $7.45 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 Note 15 Pro 5G 73 — 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 Note 15 Pro 5G $320

Safe to buy$7.45/mo

2026◆ Buy-by Jan 20282030

Category by category

Display

Galaxy S23 Ultra 90Redmi Note 15 Pro 5G 70

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 Note 15 Pro 5G 62

The Galaxy S23 Ultra's Snapdragon 8 Gen 2 for Galaxy is simply the faster chip.

Camera

Galaxy S23 Ultra 96Redmi Note 15 Pro 5G 72

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

Battery

Galaxy S23 Ultra 80Redmi Note 15 Pro 5G 100

6,580mAh vs 5,000mAh — the Redmi Note 15 Pro 5G lasts longer between charges.

Software longevity

Galaxy S23 Ultra 24Redmi Note 15 Pro 5G 51

The Redmi Note 15 Pro 5G is supported until Jan 2030 — 23 months longer than the Galaxy S23 Ultra.

Value

Galaxy S23 Ultra 76Redmi Note 15 Pro 5G 73

Pound for pound, these two are equally good deals.

Full spec table

Spec	Galaxy S23 Ultra	Redmi Note 15 Pro 5G
Price (street)	$339	$320
Display	6.8-inch Dynamic AMOLED 2X, QHD+, LTPO 1–120Hz, 1750 nits peak	6.83-inch AMOLED, 1.5K, 120Hz, 12-bit, Dolby Vision/HDR10+
Chipset	Snapdragon 8 Gen 2 for Galaxy	MediaTek Dimensity 7400-Ultra (4nm)
RAM	8GB/12GB	8GB/12GB
Storage	256GB/512GB/1TB	256GB/512GB
Battery	5,000 mAh	6,580 mAh
Charging	45W wired, 15W wireless, 4.5W reverse wireless	45W wired, 22.5W reverse wired
Rear cameras	200MP main, 12MP ultra-wide, 10MP telephoto 3x, 10MP periscope 10x	200MP main, 8MP ultra-wide
Dimensions	163.4 × 78.1 × 8.9 mm	163.6 × 78.1 × 8.0 mm
Weight	234 g	210 g
Water resistance	IP68	IP68/IP69
Supported until	Feb 2028	Jan 2030

Galaxy S23 Ultra full verdict →Redmi Note 15 Pro 5G 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.