Galaxy M15 5G vs Redmi Note 15 5G

Phone 1

Phone 2

Winner

Xiaomi Redmi Note 15 5G

Lifespan decides this one: the Redmi Note 15 5G is supported until Dec 2029 at $6.03 per month of safe use, while the Galaxy M15 5G runs out in Apr 2029 ($4.47/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Galaxy M15 5G 71 · Redmi Note 15 5G 71 — 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 M15 5G $150

Buy with care$4.47/mo

2024◆ Buy-by Apr 20272029

Xiaomi Redmi Note 15 5G $250

Safe to buy$6.03/mo

2025◆ Buy-by Dec 20272029

Category by category

Display

Galaxy M15 5G 50Redmi Note 15 5G 80

The Redmi Note 15 5G's screen is the better one — 6.77-inch amoled, fhd+, 120hz, 3200 nits peak.

Performance

Galaxy M15 5G 38Redmi Note 15 5G 48

The Redmi Note 15 5G's Qualcomm Snapdragon 6 Gen 3 is simply the faster chip.

Camera

Galaxy M15 5G 55Redmi Note 15 5G 67

The Redmi Note 15 5G has the stronger camera system (2 real rear lenses vs 1).

Battery

Galaxy M15 5G 100Redmi Note 15 5G 90

6,000mAh vs 5,520mAh — the Galaxy M15 5G lasts longer between charges.

Software longevity

Galaxy M15 5G 40Redmi Note 15 5G 49

The Redmi Note 15 5G is supported until Dec 2029 — 8 months longer than the Galaxy M15 5G.

Value

Galaxy M15 5G 71Redmi Note 15 5G 71

Pound for pound, these two are equally good deals.

Full spec table

Spec	Galaxy M15 5G	Redmi Note 15 5G
Price (street)	$150	$250
Display	6.5-inch Super AMOLED, 1080 x 2340 (FHD+), 90Hz	6.77-inch AMOLED, FHD+, 120Hz, 3200 nits peak
Chipset	MediaTek Dimensity 6100+	Qualcomm Snapdragon 6 Gen 3
RAM	4GB/6GB/8GB	8GB
Storage	128GB/256GB	256GB/512GB
Battery	6,000 mAh	5,520 mAh
Charging	25W wired	45W wired
Rear cameras	50MP main, 5MP ultra-wide, 2MP macro	108MP main, 8MP ultra-wide
Dimensions	160.1 × 76.8 × 9.3 mm	164 × 75.4 × 7.4 mm
Weight	217 g	178 g
Water resistance	None	IP66
Supported until	Apr 2029	Dec 2029

Galaxy M15 5G full verdict →Redmi Note 15 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.