PhoneLifespan

15T Pro vs Redmi Turbo 4

vs

Winner

Xiaomi 15T Pro

Lifespan decides this one: the 15T Pro is supported until Sep 2030 at $12.69 per month of safe use, while the Redmi Turbo 4 runs out in Jan 2029 ($7.04/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 15T Pro 69 · Redmi Turbo 4 76 — methodology

The lifespan decider

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

Xiaomi 15T Pro $650
Safe to buy$12.69/mo
2025◆ Buy-by Sep 20282030
Xiaomi Redmi Turbo 4 $215
Buy with care$7.04/mo
2025◆ Buy-by Jan 20272029

Category by category

Display
15T Pro 70Redmi Turbo 4 80

The Redmi Turbo 4's screen is the better one — 6.67-inch ltps oled, 1.5k, 120hz, 3200 nits peak.

Performance
15T Pro 94Redmi Turbo 4 78

The 15T Pro's MediaTek Dimensity 9400+ is simply the faster chip.

Camera
15T Pro 79Redmi Turbo 4 67

The 15T Pro has the stronger camera system (3 real rear lenses vs 2).

Battery
15T Pro 90Redmi Turbo 4 100

6,550mAh vs 5,500mAh — the Redmi Turbo 4 lasts longer between charges.

Software longevity
15T Pro 61Redmi Turbo 4 36

The 15T Pro is supported until Sep 2030 — 21 months longer than the Redmi Turbo 4.

Value
15T Pro 69Redmi Turbo 4 76

Overall value goes to the Redmi Turbo 4 at $7.04 per month of safe use.

Full spec table
Spec15T ProRedmi Turbo 4
Price (street)$650$215
Display6.83-inch AMOLED, 2772x1280, 144Hz6.67-inch LTPS OLED, 1.5K, 120Hz, 3200 nits peak
ChipsetMediaTek Dimensity 9400+MediaTek Dimensity 8400-Ultra (4nm)
RAM12GB12GB/16GB
Storage256GB/512GB/1TB256GB/512GB
Battery5,500 mAh6,550 mAh
Charging90W wired, 50W wireless90W wired
Rear cameras50MP main, 50MP telephoto 5x periscope, 12MP ultra-wide50MP main, 8MP ultra-wide
Dimensions162.7 × 77.9 × 8.0 mm161 × 75.2 × 8.1 mm
Weight210 g204 g
Water resistanceIP68IP68
Supported untilSep 2030Jan 2029
15T Pro full verdict →Redmi Turbo 4 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.