PhoneLifespan

Redmi K80 vs Redmi Note 15 5G

vs

Winner

Xiaomi Redmi K80

The Redmi K80 wins this one, taking performance and battery decisively. Against the Redmi Note 15 5G it's also the sounder buy at $8.59 per month of safe use.

Value Score: Redmi K80 79 · Redmi Note 15 5G 71 — methodology

The lifespan decider

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

Xiaomi Redmi K80 $355
Safe to buy$8.59/mo
2024◆ Buy-by Nov 20272029
Xiaomi Redmi Note 15 5G $250
Safe to buy$6.03/mo
2025◆ Buy-by Dec 20272029

Category by category

Display
Redmi K80 80Redmi Note 15 5G 80

Both displays are effectively the same class.

Performance
Redmi K80 92Redmi Note 15 5G 48

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

Camera
Redmi K80 67Redmi Note 15 5G 67

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

Battery
Redmi K80 100Redmi Note 15 5G 90

6,550mAh vs 5,520mAh — the Redmi K80 lasts longer between charges.

Software longevity
Redmi K80 49Redmi Note 15 5G 49

Both phones' support windows end around the same time.

Value
Redmi K80 79Redmi Note 15 5G 71

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

Full spec table
SpecRedmi K80Redmi Note 15 5G
Price (street)$355$250
Display6.67-inch AMOLED, 2K, 120Hz, 3200 nits peak6.77-inch AMOLED, FHD+, 120Hz, 3200 nits peak
ChipsetQualcomm Snapdragon 8 Gen 3 (4nm)Qualcomm Snapdragon 6 Gen 3
RAM12GB/16GB8GB
Storage256GB/512GB/1TB256GB/512GB
Battery6,550 mAh5,520 mAh
Charging90W wired, 30W wireless45W wired
Rear cameras50MP main, 8MP ultra-wide, 2MP macro108MP main, 8MP ultra-wide
Dimensions160.3 × 75.0 × 8.0 mm164 × 75.4 × 7.4 mm
Weight206 g178 g
Water resistanceIP68IP66
Supported untilNov 2029Dec 2029
Redmi K80 full verdict →Redmi Note 15 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.