PhoneLifespan

Galaxy M55 5G vs Redmi A5

vs

Winner

Xiaomi Redmi A5

Lifespan decides this one: the Redmi A5 is supported until Mar 2028 at $3.55 per month of safe use, while the Galaxy M55 5G runs out in Mar 2029 ($8.10/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Galaxy M55 5G 72 · Redmi A5 65 — 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
Xiaomi Redmi A5 $75
Buy with care$3.55/mo
2025◆ Buy-by Mar 20262028

Category by category

Display
Galaxy M55 5G 70Redmi A5 70

Both displays are effectively the same class.

Performance
Galaxy M55 5G 70Redmi A5 55

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

Camera
Galaxy M55 5G 67Redmi A5 40

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

Battery
Galaxy M55 5G 80Redmi A5 84

5,200mAh vs 5,000mAh — the Redmi A5 lasts longer between charges.

Software longevity
Galaxy M55 5G 40Redmi A5 25

The Galaxy M55 5G is supported until Mar 2029 — 12 months longer than the Redmi A5.

Value
Galaxy M55 5G 72Redmi A5 65

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

Full spec table
SpecGalaxy M55 5GRedmi A5
Price (street)$270$75
Display6.7-inch Super AMOLED Plus, 1080x2400 (FHD+), 120Hz6.88-inch IPS LCD, HD+, 120Hz
ChipsetQualcomm Snapdragon 7 Gen 1Unisoc T7250
RAM8GB/12GB3GB/4GB/6GB
Storage128GB/256GB64GB/128GB
Battery5,000 mAh5,200 mAh
Charging45W wired15W wired
Rear cameras50MP main, 8MP ultra-wide, 2MP macro32MP main
Dimensions163.9 × 76.5 × 7.8 mm171.4 × 77.8 × 8.3 mm
Weight180 g193 g
Water resistanceNoneIP52
Supported untilMar 2029Mar 2028
Galaxy M55 5G full verdict →Redmi A5 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.