PhoneLifespan

Phone (3a) Pro vs Redmi Note 15 Pro 5G

vs

It depends

Too close to call outright

These two are within 2 points overall — it genuinely depends on price on the day. The Phone (3a) Pro edges both longevity and performance, so prefer it when prices are close.

Value Score: Phone (3a) Pro 71 · 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.

Nothing Phone (3a) Pro $429
Safe to buy$7.59/mo
2025◆ Buy-by Mar 20292031
2026◆ Buy-by Jan 20282030

Category by category

Display
Phone (3a) Pro 80Redmi Note 15 Pro 5G 70

The Phone (3a) Pro's screen is the better one — 6.77-inch amoled, 1080×2392 (fhd+), up to 120hz, 3000 nits peak.

Performance
Phone (3a) Pro 64Redmi Note 15 Pro 5G 62

Performance is a wash — same chip tier.

Camera
Phone (3a) Pro 79Redmi Note 15 Pro 5G 72

The Phone (3a) Pro has the stronger camera system (3 real rear lenses vs 2).

Battery
Phone (3a) Pro 80Redmi Note 15 Pro 5G 100

6,580mAh vs 5,000mAh — the Redmi Note 15 Pro 5G lasts longer between charges.

Software longevity
Phone (3a) Pro 67Redmi Note 15 Pro 5G 51

The Phone (3a) Pro is supported until Mar 2031 — 14 months longer than the Redmi Note 15 Pro 5G.

Value
Phone (3a) Pro 71Redmi Note 15 Pro 5G 73

Pound for pound, these two are equally good deals.

Full spec table
SpecPhone (3a) ProRedmi Note 15 Pro 5G
Price (street)$429$320
Display6.77-inch AMOLED, 1080×2392 (FHD+), up to 120Hz, 3000 nits peak6.83-inch AMOLED, 1.5K, 120Hz, 12-bit, Dolby Vision/HDR10+
ChipsetSnapdragon 7s Gen 3MediaTek Dimensity 7400-Ultra (4nm)
RAM12GB8GB/12GB
Storage256GB256GB/512GB
Battery5,000 mAh6,580 mAh
Charging50W wired, no wireless45W wired, 22.5W reverse wired
Rear cameras50MP main, 50MP periscope telephoto 3x, 8MP ultra-wide200MP main, 8MP ultra-wide
Dimensions163.52 × 77.50 × 8.39 mm163.6 × 78.1 × 8.0 mm
Weight211 g210 g
Water resistanceIP64IP68/IP69
Supported untilMar 2031Jan 2030

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.