Galaxy M55 5G vs Galaxy S24 Ultra

Phone 1

Phone 2

Winner

Samsung Galaxy S24 Ultra

Lifespan decides this one: the Galaxy S24 Ultra is supported until Jan 2031 at $17.07 per month of safe use, while the Galaxy M55 5G runs out in Mar 2029 ($8.07/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Galaxy M55 5G 73 · Galaxy S24 Ultra 70 — 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 M55 5G $270

Buy with care$8.07/mo

2024◆ Buy-by Mar 20272029

Samsung Galaxy S24 Ultra $949

Safe to buy$17.07/mo

2024◆ Buy-by Jan 20292031

Category by category

Display

Galaxy M55 5G 70Galaxy S24 Ultra 100

The Galaxy S24 Ultra's screen is the better one — 6.8-inch dynamic amoled 2x, qhd+ (3120×1440), 1–120hz, up to 2600 nits.

Performance

Galaxy M55 5G 70Galaxy S24 Ultra 92

The Galaxy S24 Ultra's Snapdragon 8 Gen 3 for Galaxy is simply the faster chip.

Camera

Galaxy M55 5G 67Galaxy S24 Ultra 96

The Galaxy S24 Ultra has the stronger camera system (4 real rear lenses vs 2).

Battery

Galaxy M55 5G 80Galaxy S24 Ultra 80

Battery capacities are close enough not to decide this.

Software longevity

Galaxy M55 5G 40Galaxy S24 Ultra 66

The Galaxy S24 Ultra is supported until Jan 2031 — 22 months longer than the Galaxy M55 5G.

Value

Galaxy M55 5G 73Galaxy S24 Ultra 70

Pound for pound, these two are equally good deals.

Full spec table

Spec	Galaxy M55 5G	Galaxy S24 Ultra
Price (street)	$270	$949
Display	6.7-inch Super AMOLED Plus, 1080x2400 (FHD+), 120Hz	6.8-inch Dynamic AMOLED 2X, QHD+ (3120×1440), 1–120Hz, up to 2600 nits
Chipset	Qualcomm Snapdragon 7 Gen 1	Snapdragon 8 Gen 3 for Galaxy
RAM	8GB/12GB	12GB
Storage	128GB/256GB	256GB/512GB/1TB
Battery	5,000 mAh	5,000 mAh
Charging	45W wired	45W wired, 15W wireless
Rear cameras	50MP main, 8MP ultra-wide, 2MP macro	200MP main, 12MP ultra-wide, 10MP telephoto 3x, 50MP telephoto 5x periscope
Dimensions	163.9 × 76.5 × 7.8 mm	162.3 × 79.0 × 8.6 mm
Weight	180 g	232 g
Water resistance	None	IP68
Supported until	Mar 2029	Jan 2031

Galaxy M55 5G full verdict →Galaxy S24 Ultra 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.