Vivo Y400 Pro review: The slim AMOLED big-battery option in vivo's crowded Y aisle.
Endurance dressed as a slim phone.
Y400 Pro pairs a 5,500 mAh cell with 90 W charging in a 7.5 mm shell — physics vivo has been quietly mastering. The single rear camera that matters and a short update window keep it honest about its price class.
01Display
74/10074/100 puts it above the 69-point average for budget phones of 2025.
02Camera
64/10064/100 puts it above the 59-point average for budget phones of 2025.
03Performance
64/100At 64/100 this is one of the strongest performance showings among budget phones of 2025 — 9 points above the cohort average.
04Battery
80/10080/100 — right at the average for budget phones of 2025.
05Build
66/10066/100 — right at the average for budget phones of 2025.
06Value
72/10072/100 — right at the average for budget phones of 2025.
- 90 W charging + 5,500 mAh — top endurance combo under $300.
- Slim 7.5 mm despite the big cell.
- Bright AMOLED panel.
- Dimensity 7300 handles daily work easily.
- No ultrawide camera at all.
- Two OS updates.
- IP65, not IP68.
- Y-series naming chaos makes it hard to find.
How this review is built: every section score, spec row and comparison on this page comes from SpecEagle's tracked catalogue — scores weight measured specs against the 146-phone cohort of budget devices released around the same time. We don't publish invented lab anecdotes. Spot an error? .