Redmi 15 5G vs Redmi Turbo 4

Phone 1

Phone 2

Winner

Xiaomi Redmi 15 5G

Lifespan decides this one: the Redmi 15 5G is supported until Aug 2029 at $4.80 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: Redmi 15 5G 75 · 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 Redmi 15 5G $180

Safe to buy$4.80/mo

2025◆ Buy-by Aug 20272029

Xiaomi Redmi Turbo 4 $215

Buy with care$7.04/mo

2025◆ Buy-by Jan 20272029

Category by category

Display

Redmi 15 5G 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

Redmi 15 5G 46Redmi Turbo 4 78

The Redmi Turbo 4's MediaTek Dimensity 8400-Ultra (4nm) is simply the faster chip.

Camera

Redmi 15 5G 55Redmi Turbo 4 67

The Redmi Turbo 4 has the stronger camera system (2 real rear lenses vs 1).

Battery

Redmi 15 5G 100Redmi Turbo 4 100

Battery capacities are close enough not to decide this.

Software longevity

Redmi 15 5G 45Redmi Turbo 4 36

The Redmi 15 5G is supported until Aug 2029 — 7 months longer than the Redmi Turbo 4.

Value

Redmi 15 5G 75Redmi Turbo 4 76

Pound for pound, these two are equally good deals.

Full spec table

Spec	Redmi 15 5G	Redmi Turbo 4
Price (street)	$180	$215
Display	6.9-inch IPS LCD, FHD+, 144Hz, 850 nits peak	6.67-inch LTPS OLED, 1.5K, 120Hz, 3200 nits peak
Chipset	Qualcomm Snapdragon 6s Gen 3	MediaTek Dimensity 8400-Ultra (4nm)
RAM	4GB/6GB/8GB	12GB/16GB
Storage	128GB/256GB	256GB/512GB
Battery	7,000 mAh	6,550 mAh
Charging	33W wired, 18W reverse wired	90W wired
Rear cameras	50MP main, 2MP depth	50MP main, 8MP ultra-wide
Dimensions	169.5 × 80.5 × 8.4 mm	161 × 75.2 × 8.1 mm
Weight	217 g	204 g
Water resistance	IP64	IP68
Supported until	Aug 2029	Jan 2029

Redmi 15 5G 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.