PhoneLifespan

Razr+ 2024 (Razr 50 Ultra) vs Redmi K80

vs

Winner

Xiaomi Redmi K80

Lifespan decides this one: the Redmi K80 is supported until Nov 2029 at $8.59 per month of safe use, while the Razr+ 2024 (Razr 50 Ultra) runs out in Jul 2028 ($20.20/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Razr+ 2024 (Razr 50 Ultra) 60 · Redmi K80 79 methodology

The lifespan decider

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

2024◆ Buy-by Jul 20262028
Xiaomi Redmi K80 $355
Safe to buy$8.59/mo
2024◆ Buy-by Nov 20272029

Category by category

Display
Razr+ 2024 (Razr 50 Ultra) 90Redmi K80 80

The Razr+ 2024 (Razr 50 Ultra)'s screen is the better one — inner: 6.9-inch foldable ltpo poled, fhd+, up to 165hz, up to 3000 nits peak; cover: 4.0-inch ltpo poled, up to 165hz, up to 2400 nits peak.

Performance
Razr+ 2024 (Razr 50 Ultra) 82Redmi K80 92

The Redmi K80's Qualcomm Snapdragon 8 Gen 3 (4nm) is simply the faster chip.

Camera
Razr+ 2024 (Razr 50 Ultra) 67Redmi K80 67

Camera systems are comparable on paper — pick by sample photos.

Battery
Razr+ 2024 (Razr 50 Ultra) 60Redmi K80 100

6,550mAh vs 4,000mAh — the Redmi K80 lasts longer between charges.

Software longevity
Razr+ 2024 (Razr 50 Ultra) 29Redmi K80 49

The Redmi K80 is supported until Nov 2029 — 17 months longer than the Razr+ 2024 (Razr 50 Ultra).

Value
Razr+ 2024 (Razr 50 Ultra) 60Redmi K80 79

Overall value goes to the Redmi K80 at $8.59 per month of safe use.

Full spec table
SpecRazr+ 2024 (Razr 50 Ultra)Redmi K80
Price (street)$500$355
DisplayInner: 6.9-inch foldable LTPO pOLED, FHD+, up to 165Hz, up to 3000 nits peak; Cover: 4.0-inch LTPO pOLED, up to 165Hz, up to 2400 nits peak6.67-inch AMOLED, 2K, 120Hz, 3200 nits peak
ChipsetSnapdragon 8s Gen 3Qualcomm Snapdragon 8 Gen 3 (4nm)
RAM12GB12GB/16GB
Storage256GB256GB/512GB/1TB
Battery4,000 mAh6,550 mAh
Charging45W TurboPower wired, 15W wireless90W wired, 30W wireless
Rear cameras50MP main, 50MP telephoto 2x50MP main, 8MP ultra-wide, 2MP macro
DimensionsFolded 73.99 × 88.09 × 15.32 mm; Unfolded 73.99 × 171.42 × 7.09 mm160.3 × 75.0 × 8.0 mm
Weight189 g206 g
Water resistanceIPX8 (water resistant, not dust rated)IP68
Supported untilJul 2028Nov 2029

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