Redmi K70 Ultra vs Redmi Turbo 4

Phone 1

Phone 2

Winner

Xiaomi Redmi Turbo 4

Lifespan decides this one: the Redmi Turbo 4 is supported until Jan 2029 at $7.04 per month of safe use, while the Redmi K70 Ultra runs out in Jul 2028 ($15.17/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Redmi K70 Ultra 73 · 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 K70 Ultra $380

Buy with care$15.17/mo

2024◆ Buy-by Jul 20262028

Xiaomi Redmi Turbo 4 $215

Buy with care$7.04/mo

2025◆ Buy-by Jan 20272029

Category by category

Display

Redmi K70 Ultra 80Redmi Turbo 4 80

Both displays are effectively the same class.

Performance

Redmi K70 Ultra 95Redmi Turbo 4 78

The Redmi K70 Ultra's MediaTek Dimensity 9300+ (4nm) is simply the faster chip.

Camera

Redmi K70 Ultra 67Redmi Turbo 4 67

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

Battery

Redmi K70 Ultra 90Redmi Turbo 4 100

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

Software longevity

Redmi K70 Ultra 30Redmi Turbo 4 36

The Redmi Turbo 4 is supported until Jan 2029 — 5 months longer than the Redmi K70 Ultra.

Value

Redmi K70 Ultra 73Redmi Turbo 4 76

Pound for pound, these two are equally good deals.

Full spec table

Spec	Redmi K70 Ultra	Redmi Turbo 4
Price (street)	$380	$215
Display	6.67-inch AMOLED, 1.5K, 144Hz, 4000 nits peak, Dolby Vision	6.67-inch LTPS OLED, 1.5K, 120Hz, 3200 nits peak
Chipset	MediaTek Dimensity 9300+ (4nm)	MediaTek Dimensity 8400-Ultra (4nm)
RAM	12GB/16GB/24GB	12GB/16GB
Storage	256GB/512GB/1TB	256GB/512GB
Battery	5,500 mAh	6,550 mAh
Charging	120W wired	90W wired
Rear cameras	50MP main, 8MP ultra-wide, 2MP macro	50MP main, 8MP ultra-wide
Dimensions	160.4 × 75.1 × 8.4 mm	161 × 75.2 × 8.1 mm
Weight	211 g	204 g
Water resistance	IP68	IP68
Supported until	Jul 2028	Jan 2029

Redmi K70 Ultra 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.