Y39 5G vs Redmi A4 5G

Phone 1

Phone 2

Winner

Xiaomi Redmi A4 5G

Lifespan decides this one: the Redmi A4 5G is supported until Nov 2028 at $3.41 per month of safe use, while the Y39 5G runs out in Mar 2028 ($9.39/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Y39 5G 66 · Redmi A4 5G 70 — methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Vivo Y39 5G $200

Buy with care$9.39/mo

2025◆ Buy-by Mar 20262028

Xiaomi Redmi A4 5G $100

Buy with care$3.41/mo

2024◆ Buy-by Nov 20262028

Category by category

Display

Y39 5G 70Redmi A4 5G 70

Both displays are effectively the same class.

Performance

Y39 5G 42Redmi A4 5G 55

The Redmi A4 5G's Qualcomm Snapdragon 4s Gen 2 (4nm) is simply the faster chip.

Camera

Y39 5G 55Redmi A4 5G 55

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

Battery

Y39 5G 100Redmi A4 5G 83

6,500mAh vs 5,160mAh — the Y39 5G lasts longer between charges.

Software longevity

Y39 5G 25Redmi A4 5G 35

The Redmi A4 5G is supported until Nov 2028 — 8 months longer than the Y39 5G.

Value

Y39 5G 66Redmi A4 5G 70

Overall value goes to the Redmi A4 5G at $3.41 per month of safe use.

Full spec table

Spec	Y39 5G	Redmi A4 5G
Price (street)	$200	$100
Display	6.68-inch IPS LCD, HD+, 120Hz	6.88-inch IPS LCD, HD+, 120Hz
Chipset	Qualcomm Snapdragon 4 Gen 2 (4nm)	Qualcomm Snapdragon 4s Gen 2 (4nm)
RAM	8GB	4GB
Storage	128GB/256GB	64GB/128GB
Battery	6,500 mAh	5,160 mAh
Charging	44W wired	18W wired (33W charger in box)
Rear cameras	50MP main, 2MP depth	50MP main
Dimensions	163.9 × 76.7 × 8.1 mm	171.88 × 77.8 × 8.22 mm
Weight	199 g	212 g
Water resistance	IP64	IP52
Supported until	Mar 2028	Nov 2028

Y39 5G full verdict →Redmi A4 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.