PhoneLifespan

Redmi A5 vs Redmi K70 Ultra

vs

Winner

Xiaomi Redmi A5

Lifespan decides this one: the Redmi A5 is supported until Mar 2028 at $3.55 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 A5 65 · Redmi K70 Ultra 73 — 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 A5 $75
Buy with care$3.55/mo
2025◆ Buy-by Mar 20262028
Xiaomi Redmi K70 Ultra $380
Buy with care$15.17/mo
2024◆ Buy-by Jul 20262028

Category by category

Display
Redmi A5 70Redmi K70 Ultra 80

The Redmi K70 Ultra's screen is the better one — 6.67-inch amoled, 1.5k, 144hz, 4000 nits peak, dolby vision.

Performance
Redmi A5 55Redmi K70 Ultra 95

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

Camera
Redmi A5 40Redmi K70 Ultra 67

The Redmi K70 Ultra has the stronger camera system (2 real rear lenses vs 1).

Battery
Redmi A5 84Redmi K70 Ultra 90

5,500mAh vs 5,200mAh — the Redmi K70 Ultra lasts longer between charges.

Software longevity
Redmi A5 25Redmi K70 Ultra 30

The Redmi K70 Ultra is supported until Jul 2028 — 4 months longer than the Redmi A5.

Value
Redmi A5 65Redmi K70 Ultra 73

Overall value goes to the Redmi K70 Ultra at $15.17 per month of safe use.

Full spec table
SpecRedmi A5Redmi K70 Ultra
Price (street)$75$380
Display6.88-inch IPS LCD, HD+, 120Hz6.67-inch AMOLED, 1.5K, 144Hz, 4000 nits peak, Dolby Vision
ChipsetUnisoc T7250MediaTek Dimensity 9300+ (4nm)
RAM3GB/4GB/6GB12GB/16GB/24GB
Storage64GB/128GB256GB/512GB/1TB
Battery5,200 mAh5,500 mAh
Charging15W wired120W wired
Rear cameras32MP main50MP main, 8MP ultra-wide, 2MP macro
Dimensions171.4 × 77.8 × 8.3 mm160.4 × 75.1 × 8.4 mm
Weight193 g211 g
Water resistanceIP52IP68
Supported untilMar 2028Jul 2028
Redmi A5 full verdict →Redmi K70 Ultra 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.