PhoneLifespan

Redmi A4 5G vs Redmi Note 15 Pro 5G

vs

Winner

Xiaomi Redmi Note 15 Pro 5G

Lifespan decides this one: the Redmi Note 15 Pro 5G is supported until Jan 2030 at $7.45 per month of safe use, while the Redmi A4 5G runs out in Nov 2028 ($3.41/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Redmi A4 5G 70 · Redmi Note 15 Pro 5G 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 A4 5G $100
Buy with care$3.41/mo
2024◆ Buy-by Nov 20262028
Xiaomi Redmi Note 15 Pro 5G $320
Safe to buy$7.45/mo
2026◆ Buy-by Jan 20282030

Category by category

Display
Redmi A4 5G 70Redmi Note 15 Pro 5G 70

Both displays are effectively the same class.

Performance
Redmi A4 5G 55Redmi Note 15 Pro 5G 62

The Redmi Note 15 Pro 5G's MediaTek Dimensity 7400-Ultra (4nm) is simply the faster chip.

Camera
Redmi A4 5G 55Redmi Note 15 Pro 5G 72

The Redmi Note 15 Pro 5G has the stronger camera system (2 real rear lenses vs 1).

Battery
Redmi A4 5G 83Redmi Note 15 Pro 5G 100

6,580mAh vs 5,160mAh — the Redmi Note 15 Pro 5G lasts longer between charges.

Software longevity
Redmi A4 5G 35Redmi Note 15 Pro 5G 51

The Redmi Note 15 Pro 5G is supported until Jan 2030 — 14 months longer than the Redmi A4 5G.

Value
Redmi A4 5G 70Redmi Note 15 Pro 5G 73

Pound for pound, these two are equally good deals.

Full spec table
SpecRedmi A4 5GRedmi Note 15 Pro 5G
Price (street)$100$320
Display6.88-inch IPS LCD, HD+, 120Hz6.83-inch AMOLED, 1.5K, 120Hz, 12-bit, Dolby Vision/HDR10+
ChipsetQualcomm Snapdragon 4s Gen 2 (4nm)MediaTek Dimensity 7400-Ultra (4nm)
RAM4GB8GB/12GB
Storage64GB/128GB256GB/512GB
Battery5,160 mAh6,580 mAh
Charging18W wired (33W charger in box)45W wired, 22.5W reverse wired
Rear cameras50MP main200MP main, 8MP ultra-wide
Dimensions171.88 × 77.8 × 8.22 mm163.6 × 78.1 × 8.0 mm
Weight212 g210 g
Water resistanceIP52IP68/IP69
Supported untilNov 2028Jan 2030
Redmi A4 5G full verdict →Redmi Note 15 Pro 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.