K12 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 K12 runs out in Apr 2028 ($11.83/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: K12 70 · 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.

Oppo K12 $265

Buy with care$11.83/mo

2024◆ Buy-by Apr 20262028

Xiaomi Redmi A4 5G $100

Buy with care$3.41/mo

2024◆ Buy-by Nov 20262028

Category by category

Display

K12 70Redmi A4 5G 70

Both displays are effectively the same class.

Performance

K12 64Redmi A4 5G 55

The K12's Qualcomm Snapdragon 7 Gen 3 (4nm) is simply the faster chip.

Camera

K12 67Redmi A4 5G 55

The K12 has the stronger camera system (2 real rear lenses vs 1).

Battery

K12 90Redmi A4 5G 83

5,500mAh vs 5,160mAh — the K12 lasts longer between charges.

Software longevity

K12 27Redmi A4 5G 35

The Redmi A4 5G is supported until Nov 2028 — 7 months longer than the K12.

Value

K12 70Redmi A4 5G 70

Pound for pound, these two are equally good deals.

Full spec table

Spec	K12	Redmi A4 5G
Price (street)	$265	$100
Display	6.7-inch AMOLED, FHD+, 120Hz, HDR10+, 1100 nits peak	6.88-inch IPS LCD, HD+, 120Hz
Chipset	Qualcomm Snapdragon 7 Gen 3 (4nm)	Qualcomm Snapdragon 4s Gen 2 (4nm)
RAM	8GB/12GB	4GB
Storage	256GB/512GB	64GB/128GB
Battery	5,500 mAh	5,160 mAh
Charging	100W wired SuperVOOC	18W wired (33W charger in box)
Rear cameras	50MP main, 8MP ultra-wide	50MP main
Dimensions	162.5 × 75.3 × 8.4 mm	171.88 × 77.8 × 8.22 mm
Weight	186 g	212 g
Water resistance	IP54	IP52
Supported until	Apr 2028	Nov 2028

K12 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.