PhoneLifespan

15T vs Redmi 13 5G

vs

Winner

Xiaomi 15T

Lifespan decides this one: the 15T is supported until Sep 2030 at $9.76 per month of safe use, while the Redmi 13 5G runs out in Jul 2028 ($5.64/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 15T 70 · Redmi 13 5G 68 — 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 $500
Safe to buy$9.76/mo
2025◆ Buy-by Sep 20282030
Xiaomi Redmi 13 5G $140
Buy with care$5.64/mo
2024◆ Buy-by Jul 20262028

Category by category

Display
15T 70Redmi 13 5G 70

Both displays are effectively the same class.

Performance
15T 78Redmi 13 5G 42

The 15T's MediaTek Dimensity 8400-Ultra is simply the faster chip.

Camera
15T 79Redmi 13 5G 55

The 15T has the stronger camera system (3 real rear lenses vs 1).

Battery
15T 90Redmi 13 5G 81

5,500mAh vs 5,030mAh — the 15T lasts longer between charges.

Software longevity
15T 61Redmi 13 5G 30

The 15T is supported until Sep 2030 — 26 months longer than the Redmi 13 5G.

Value
15T 70Redmi 13 5G 68

Pound for pound, these two are equally good deals.

Full spec table
Spec15TRedmi 13 5G
Price (street)$500$140
Display6.83-inch AMOLED, 2772x1280, 144Hz6.79-inch IPS LCD, FHD+, 120Hz, 550 nits peak
ChipsetMediaTek Dimensity 8400-UltraQualcomm Snapdragon 4 Gen 2 AE
RAM12GB6GB/8GB
Storage256GB/512GB128GB/256GB
Battery5,500 mAh5,030 mAh
Charging67W wired33W wired
Rear cameras50MP main, 50MP telephoto 2x, 12MP ultra-wide108MP main, 2MP depth
Dimensions163.2 × 78.0 × 7.5 mm168.6 × 76.3 × 8.3 mm
Weight194 g205 g
Water resistanceIP68IP54
Supported untilSep 2030Jul 2028
15T full verdict →Redmi 13 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.