K12 vs Galaxy M15 5G

Phone 1

Phone 2

Winner

Samsung Galaxy M15 5G

Lifespan decides this one: the Galaxy M15 5G is supported until Apr 2029 at $4.46 per month of safe use, while the K12 runs out in Apr 2028 ($11.83/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: K12 70 · Galaxy M15 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.

Oppo K12 $265

Buy with care$11.83/mo

2024◆ Buy-by Apr 20262028

Samsung Galaxy M15 5G $150

Buy with care$4.46/mo

2024◆ Buy-by Apr 20272029

Category by category

Display

K12 70Galaxy M15 5G 50

The K12's screen is the better one — 6.7-inch amoled, fhd+, 120hz, hdr10+, 1100 nits peak.

Performance

K12 64Galaxy M15 5G 38

The K12's Qualcomm Snapdragon 7 Gen 3 (4nm) is simply the faster chip.

Camera

K12 67Galaxy M15 5G 55

The K12 has the stronger camera system (2 real rear lenses vs 1).

Battery

K12 90Galaxy M15 5G 100

6,000mAh vs 5,500mAh — the Galaxy M15 5G lasts longer between charges.

Software longevity

K12 27Galaxy M15 5G 40

The Galaxy M15 5G is supported until Apr 2029 — 11 months longer than the K12.

Value

K12 70Galaxy M15 5G 71

Pound for pound, these two are equally good deals.

Full spec table

Spec	K12	Galaxy M15 5G
Price (street)	$265	$150
Display	6.7-inch AMOLED, FHD+, 120Hz, HDR10+, 1100 nits peak	6.5-inch Super AMOLED, 1080 x 2340 (FHD+), 90Hz
Chipset	Qualcomm Snapdragon 7 Gen 3 (4nm)	MediaTek Dimensity 6100+
RAM	8GB/12GB	4GB/6GB/8GB
Storage	256GB/512GB	128GB/256GB
Battery	5,500 mAh	6,000 mAh
Charging	100W wired SuperVOOC	25W wired
Rear cameras	50MP main, 8MP ultra-wide	50MP main, 5MP ultra-wide, 2MP macro
Dimensions	162.5 × 75.3 × 8.4 mm	160.1 × 76.8 × 9.3 mm
Weight	186 g	217 g
Water resistance	IP54	None
Supported until	Apr 2028	Apr 2029

K12 full verdict →Galaxy M15 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.