Vivo X21 review: One of the first phones with an in-display fingerprint scanner.
In-display fingerprint, retail-ready.
X21 was among the first mainstream-retail phones with an under-display fingerprint sensor, paired with an AMOLED and Dual Pixel camera. It put Vivo on the global map for fingerprint-under-screen tech.
01Display
80/10080/100 trails the 85-point cohort average for flagship phones of 2018.
02Camera
64/10064/100 is one of the weaker camera results among flagship phones of 2018 — 13 points under the average. Check the rows below before buying for this.
03Performance
60/10060/100 is one of the weaker performance results among flagship phones of 2018 — 20 points under the average. Check the rows below before buying for this.
04Battery
64/10064/100 is one of the weaker battery results among flagship phones of 2018 — 12 points under the average. Check the rows below before buying for this.
05Build
72/10072/100 trails the 78-point cohort average for flagship phones of 2018.
06Value
64/10064/100 — right at the average for flagship phones of 2018.
- Early in-display fingerprint sensor.
- AMOLED + Dual Pixel main camera.
- Hi-Fi DAC audio.
- Glass-back premium design.
- SD660 mid-tier.
- Funtouch was heavy.
- Mono speaker.
- 5 MP depth filler.
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 6-phone cohort of flagship devices released around the same time. We don't publish invented lab anecdotes. Spot an error? .