PhoneLifespan

iPhone 15 Plus vs Galaxy M55 5G

vs

Winner

Apple iPhone 15 Plus

Lifespan decides this one: the iPhone 15 Plus is supported until Sep 2030 at $7.85 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: iPhone 15 Plus 67 · Galaxy M55 5G 73 methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Apple iPhone 15 Plus $403
Safe to buy$7.85/mo
2023◆ Buy-by Sep 20282030
Samsung Galaxy M55 5G $270
Buy with care$8.07/mo
2024◆ Buy-by Mar 20272029

Category by category

Display
iPhone 15 Plus 50Galaxy M55 5G 70

The Galaxy M55 5G's screen is the better one — 6.7-inch super amoled plus, 1080x2400 (fhd+), 120hz.

Performance
iPhone 15 Plus 80Galaxy M55 5G 70

The iPhone 15 Plus's Apple A16 Bionic is simply the faster chip.

Camera
iPhone 15 Plus 62Galaxy M55 5G 67

The Galaxy M55 5G has the stronger camera system — same lens count, higher-grade sensors.

Battery
iPhone 15 Plus 68Galaxy M55 5G 80

5,000mAh vs 4,383mAh — the Galaxy M55 5G lasts longer between charges.

Software longevity
iPhone 15 Plus 61Galaxy M55 5G 40

The iPhone 15 Plus is supported until Sep 2030 — 18 months longer than the Galaxy M55 5G.

Value
iPhone 15 Plus 67Galaxy M55 5G 73

Overall value goes to the Galaxy M55 5G at $8.07 per month of safe use.

Full spec table
SpeciPhone 15 PlusGalaxy M55 5G
Price (street)$403$270
Display6.7-inch Super Retina XDR OLED, 60Hz, up to 2000 nits peak6.7-inch Super AMOLED Plus, 1080x2400 (FHD+), 120Hz
ChipsetApple A16 BionicQualcomm Snapdragon 7 Gen 1
RAM6GB8GB/12GB
Storage128GB/256GB/512GB128GB/256GB
Battery4,383 mAh5,000 mAh
Charging20W+ wired (50% in ~30 min), MagSafe 15W wireless, Qi 7.5W45W wired
Rear cameras48MP main, 12MP ultra-wide50MP main, 8MP ultra-wide, 2MP macro
Dimensions160.9 × 77.8 × 7.8 mm163.9 × 76.5 × 7.8 mm
Weight201 g180 g
Water resistanceIP68None
Supported untilSep 2030Mar 2029

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.