PhoneLifespan

6 vs 15T Pro

vs

It depends

Too close to call outright

These two are within 3 points overall, so it depends on you: keep phones for years → 6 (supported until Jun 2033); want maximum speed → 15T Pro (MediaTek Dimensity 9400+).

Value Score: 6 66 · 15T Pro 69 methodology

The lifespan decider

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

Fairphone 6 $899
Safe to buy$10.67/mo
2025◆ Buy-by Jun 20312033
Xiaomi 15T Pro $650
Safe to buy$12.69/mo
2025◆ Buy-by Sep 20282030

Category by category

Display
6 8015T Pro 70

The 6's screen is the better one — 6.31-inch ltpo oled, fhd+, 10-120hz adaptive.

Performance
6 6415T Pro 94

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

Camera
6 6715T Pro 79

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

Battery
6 6815T Pro 90

5,500mAh vs 4,415mAh — the 15T Pro lasts longer between charges.

Software longevity
6 10015T Pro 61

The 6 is supported until Jun 2033 — 33 months longer than the 15T Pro.

Value
6 6615T Pro 69

Pound for pound, these two are equally good deals.

Full spec table
Spec615T Pro
Price (street)$899$650
Display6.31-inch LTPO OLED, FHD+, 10-120Hz adaptive6.83-inch AMOLED, 2772x1280, 144Hz
ChipsetQualcomm Snapdragon 7s Gen 3 (4nm)MediaTek Dimensity 9400+
RAM8GB12GB
Storage256GB256GB/512GB/1TB
Battery4,415 mAh5,500 mAh
Charging30W wired; user-removable battery90W wired, 50W wireless
Rear cameras50MP main, 13MP ultra-wide50MP main, 50MP telephoto 5x periscope, 12MP ultra-wide
Dimensions156.5 × 73.3 × 9.6 mm162.7 × 77.9 × 8.0 mm
Weight193 g210 g
Water resistanceIP55 (also MIL-STD-810H, 1.5m drop)IP68
Supported untilJun 2033Sep 2030

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