PhoneLifespan

T4 5G 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 T4 5G runs out in Apr 2028 ($11.62/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: T4 5G 72 · 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.

Vivo T4 5G $260
Buy with care$11.62/mo
2025◆ Buy-by Apr 20262028
Xiaomi Redmi K80 $355
Safe to buy$8.59/mo
2024◆ Buy-by Nov 20272029

Category by category

Display
T4 5G 80Redmi K80 80

Both displays are effectively the same class.

Performance
T4 5G 64Redmi K80 92

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

Camera
T4 5G 55Redmi K80 67

The Redmi K80 has the stronger camera system (2 real rear lenses vs 1).

Battery
T4 5G 100Redmi K80 100

Battery capacities are close enough not to decide this.

Software longevity
T4 5G 27Redmi K80 49

The Redmi K80 is supported until Nov 2029 — 19 months longer than the T4 5G.

Value
T4 5G 72Redmi K80 79

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

Full spec table
SpecT4 5GRedmi K80
Price (street)$260$355
Display6.77-inch AMOLED, FHD+, 120Hz, 5000 nits peak6.67-inch AMOLED, 2K, 120Hz, 3200 nits peak
ChipsetQualcomm Snapdragon 7s Gen 3Qualcomm Snapdragon 8 Gen 3 (4nm)
RAM8GB/12GB12GB/16GB
Storage128GB/256GB256GB/512GB/1TB
Battery7,300 mAh6,550 mAh
Charging90W wired90W wired, 30W wireless
Rear cameras50MP main, 2MP depth50MP main, 8MP ultra-wide, 2MP macro
Dimensions163.4 × 76.4 × 7.9 mm160.3 × 75.0 × 8.0 mm
Weight199 g206 g
Water resistanceIP65IP68
Supported untilApr 2028Nov 2029
T4 5G full verdict →Redmi K80 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.