Redmi Note 15 5G vs Redmi Turbo 4

Phone 1

Phone 2

Winner

Xiaomi Redmi Note 15 5G

Lifespan decides this one: the Redmi Note 15 5G is supported until Dec 2029 at $6.03 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 Note 15 5G 71 · 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 Note 15 5G $250

Safe to buy$6.03/mo

2025◆ Buy-by Dec 20272029

Xiaomi Redmi Turbo 4 $215

Buy with care$7.04/mo

2025◆ Buy-by Jan 20272029

Category by category

Display

Redmi Note 15 5G 80Redmi Turbo 4 80

Both displays are effectively the same class.

Performance

Redmi Note 15 5G 48Redmi Turbo 4 78

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

Camera

Redmi Note 15 5G 67Redmi Turbo 4 67

Camera systems are comparable on paper — pick by sample photos.

Battery

Redmi Note 15 5G 90Redmi Turbo 4 100

6,550mAh vs 5,520mAh — the Redmi Turbo 4 lasts longer between charges.

Software longevity

Redmi Note 15 5G 49Redmi Turbo 4 36

The Redmi Note 15 5G is supported until Dec 2029 — 11 months longer than the Redmi Turbo 4.

Value

Redmi Note 15 5G 71Redmi Turbo 4 76

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

Full spec table

Spec	Redmi Note 15 5G	Redmi Turbo 4
Price (street)	$250	$215
Display	6.77-inch AMOLED, FHD+, 120Hz, 3200 nits peak	6.67-inch LTPS OLED, 1.5K, 120Hz, 3200 nits peak
Chipset	Qualcomm Snapdragon 6 Gen 3	MediaTek Dimensity 8400-Ultra (4nm)
RAM	8GB	12GB/16GB
Storage	256GB/512GB	256GB/512GB
Battery	5,520 mAh	6,550 mAh
Charging	45W wired	90W wired
Rear cameras	108MP main, 8MP ultra-wide	50MP main, 8MP ultra-wide
Dimensions	164 × 75.4 × 7.4 mm	161 × 75.2 × 8.1 mm
Weight	178 g	204 g
Water resistance	IP66	IP68
Supported until	Dec 2029	Jan 2029

Redmi Note 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.