PhoneLifespan

Galaxy M55 5G vs Y39 5G

vs

Winner

Samsung Galaxy M55 5G

The Galaxy M55 5G wins this one, taking performance and software longevity decisively. Against the Y39 5G it's also the sounder buy at $8.10 per month of safe use.

Value Score: Galaxy M55 5G 72 · Y39 5G 66 — 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$8.10/mo
2024◆ Buy-by Mar 20272029
Vivo Y39 5G $200
Buy with care$9.39/mo
2025◆ Buy-by Mar 20262028

Category by category

Display
Galaxy M55 5G 70Y39 5G 70

Both displays are effectively the same class.

Performance
Galaxy M55 5G 70Y39 5G 42

The Galaxy M55 5G's Qualcomm Snapdragon 7 Gen 1 is simply the faster chip.

Camera
Galaxy M55 5G 67Y39 5G 55

The Galaxy M55 5G has the stronger camera system (2 real rear lenses vs 1).

Battery
Galaxy M55 5G 80Y39 5G 100

6,500mAh vs 5,000mAh — the Y39 5G lasts longer between charges.

Software longevity
Galaxy M55 5G 40Y39 5G 25

The Galaxy M55 5G is supported until Mar 2029 — 12 months longer than the Y39 5G.

Value
Galaxy M55 5G 72Y39 5G 66

Overall value goes to the Galaxy M55 5G at $8.10 per month of safe use.

Full spec table
SpecGalaxy M55 5GY39 5G
Price (street)$270$200
Display6.7-inch Super AMOLED Plus, 1080x2400 (FHD+), 120Hz6.68-inch IPS LCD, HD+, 120Hz
ChipsetQualcomm Snapdragon 7 Gen 1Qualcomm Snapdragon 4 Gen 2 (4nm)
RAM8GB/12GB8GB
Storage128GB/256GB128GB/256GB
Battery5,000 mAh6,500 mAh
Charging45W wired44W wired
Rear cameras50MP main, 8MP ultra-wide, 2MP macro50MP main, 2MP depth
Dimensions163.9 × 76.5 × 7.8 mm163.9 × 76.7 × 8.1 mm
Weight180 g199 g
Water resistanceNoneIP64
Supported untilMar 2029Mar 2028
Galaxy M55 5G full verdict →Y39 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.