PhoneLifespan

Galaxy M16 5G vs Galaxy M51

vs

Winner

Samsung Galaxy M16 5G

Lifespan decides this one: the Galaxy M16 5G is supported until Feb 2031 at $2.66 per month of safe use, while the Galaxy M51 is already past its support window. On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Galaxy M16 5G 75 · Galaxy M51 40 — 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 M16 5G $150
Safe to buy$2.66/mo
2025◆ Buy-by Feb 20292031
Samsung Galaxy M51 $120
Avoid buyingsupport ended
2020◆ Buy-by Aug 20222024

Category by category

Display
Galaxy M16 5G 50Galaxy M51 50

Both displays are effectively the same class.

Performance
Galaxy M16 5G 42Galaxy M51 48

The Galaxy M51's Qualcomm Snapdragon 730G is simply the faster chip.

Camera
Galaxy M16 5G 55Galaxy M51 67

The Galaxy M51 has the stronger camera system (2 real rear lenses vs 1).

Battery
Galaxy M16 5G 80Galaxy M51 100

7,000mAh vs 5,000mAh — the Galaxy M51 lasts longer between charges.

Software longevity
Galaxy M16 5G 67Galaxy M51 0

The Galaxy M16 5G is supported until Feb 2031 — 78 months longer than the Galaxy M51.

Value
Galaxy M16 5G 75Galaxy M51 40

Overall value goes to the Galaxy M16 5G at $2.66 per month of safe use.

Full spec table
SpecGalaxy M16 5GGalaxy M51
Price (street)$150$120
Display6.7-inch Super AMOLED, 1080 x 2340 (FHD+), 90Hz6.7-inch Super AMOLED Plus, 1080x2400 (FHD+), 60Hz
ChipsetMediaTek Dimensity 6300Qualcomm Snapdragon 730G
RAM4GB/6GB/8GB6GB/8GB
Storage128GB/256GB128GB
Battery5,000 mAh7,000 mAh
Charging25W wired25W wired
Rear cameras50MP main, 5MP ultra-wide, 2MP macro64MP main, 12MP ultra-wide, 5MP macro
Dimensions164.6 × 77.9 × 7.9 mm163.9 × 76.3 × 9.5 mm
Weight191 g213 g
Water resistanceNoneNone
Supported untilFeb 2031Aug 2024
Galaxy M16 5G full verdict →Galaxy M51 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.