PhoneLifespan

15 Ultra 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 15 Ultra runs out in Mar 2030 ($30.36/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 15 Ultra 65 · 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 15 Ultra $1350
Safe to buy$30.36/mo
2025◆ Buy-by Mar 20282030
Xiaomi Redmi Note 15 Pro 5G $320
Safe to buy$7.45/mo
2026◆ Buy-by Jan 20282030

Category by category

Display
15 Ultra 100Redmi Note 15 Pro 5G 70

The 15 Ultra's screen is the better one — 6.73-inch 2k (1440×3200) ltpo amoled, 1–120hz, up to 3200 nits peak.

Performance
15 Ultra 98Redmi Note 15 Pro 5G 62

The 15 Ultra's Qualcomm Snapdragon 8 Elite (3nm) is simply the faster chip.

Camera
15 Ultra 96Redmi Note 15 Pro 5G 72

The 15 Ultra has the stronger camera system (4 real rear lenses vs 2).

Battery
15 Ultra 88Redmi Note 15 Pro 5G 100

6,580mAh vs 5,410mAh — the Redmi Note 15 Pro 5G lasts longer between charges.

Software longevity
15 Ultra 53Redmi Note 15 Pro 5G 51

Both phones' support windows end around the same time.

Value
15 Ultra 65Redmi Note 15 Pro 5G 73

Overall value goes to the Redmi Note 15 Pro 5G at $7.45 per month of safe use.

Full spec table
Spec15 UltraRedmi Note 15 Pro 5G
Price (street)$1350$320
Display6.73-inch 2K (1440×3200) LTPO AMOLED, 1–120Hz, up to 3200 nits peak6.83-inch AMOLED, 1.5K, 120Hz, 12-bit, Dolby Vision/HDR10+
ChipsetQualcomm Snapdragon 8 Elite (3nm)MediaTek Dimensity 7400-Ultra (4nm)
RAM16GB8GB/12GB
Storage512GB/1TB256GB/512GB
Battery5,410 mAh6,580 mAh
Charging90W wired, 80W wireless45W wired, 22.5W reverse wired
Rear cameras50MP main, 50MP ultra-wide, 50MP telephoto (70mm floating), 200MP periscope telephoto200MP main, 8MP ultra-wide
Dimensions161.3 × 75.3 × 9.35 mm163.6 × 78.1 × 8.0 mm
Weight226 g210 g
Water resistanceIP68IP68/IP69
Supported untilMar 2030Jan 2030
15 Ultra 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.