| Prices | Price (USD) | USD $450.00 USD |
|---|---|---|
| Official Price | Global About 110 EUR | |
| Network | Technology |
GSM / CDMA / HSPA / LTE
|
| Launch | Announced | 2018, March. Released 2018, March |
| Status | Discontinued | |
| Body | Dimensions | 154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) |
| Weight | 156.2 g (5.50 oz) | |
| Build | Glass front (Gorilla Glass 3), aluminum back, aluminum frame | |
| SIM | Nano-SIM + Nano-SIM | |
| Display | Type | Super AMOLED |
| Size | 6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) | |
| Resolution | 1080 x 2280 pixels, 19:9 ratio (~402 ppi density) | |
| Protection | Corning Gorilla Glass 3 | |
| Platform | OS | Android 8.1 (Oreo), Funtouch 4 |
| Chipset | Qualcomm SDM660 Snapdragon 660 (14 nm) | |
| CPU | Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) | |
| GPU | Adreno 512 | |
| Memory | Card slot | microSDXC (uses shared SIM slot) |
| Internal | 64GB 6GB RAM, 128GB 6GB RAM | |
| Features | eMMC 5.1 | |
| Main Camera | Dual |
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF Auxiliary lens |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps | |
| Selfie camera | Single | 12 MP, f/2.0, (wide), 1/2.8", 1.28µm |
| Features | HDR | |
| Video | 1080p@30fps | |
| Sound | Loudspeaker | Yes |
| 3.5mm jack | Yes | |
| Features | 32-bit/192kHz Hi-Res audio | |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Bluetooth | 5.0, A2DP, LE | |
| Positioning | GPS, GLONASS | |
| NFC | No | |
| Radio | FM radio | |
| USB | microUSB 2.0, OTG | |
| Features | Sensors | Fingerprint (rear-mounted), accelerometer, proximity, compass |
| Battery | Type | Li-Ion 3200 mAh, non-removable |
| Charging | 18W wired | |
| Misc | Colors | Black, Aurora White, Ruby Red |
| Models | 1725, X21A | |
| Price | About 450 EUR |
Mini Review & Verdict
A smart summary of the vivo X21
Advantages
- High-contrast AMOLED screen with punchy saturation and smooth motion
- Convenient 3.5mm analog headphone port for zero-latency wired audio
Disadvantages
- Network capability is capped at 4G LTE speeds without native 5G bands
Taking a comprehensive view of its technical merits, the vivo X21 demonstrates a thoughtful balance of hardware capabilities and refined design within vivo's catalog. Visual duties are assumed by a competent AMOLED screen measuring 6.28 inches , delivering high-definition clarity, balanced color temperatures, and generous dynamic range for reading and streaming.
Processing throughput is sustained by the well-matched Qualcomm SDM660 Snapdragon 660 (14 nm), offering dependable operational stability across varied software demands. Multitasking, web browsing, and multimedia applications execute with dependable rhythm and stable thermal dissipation. Photography needs are addressed with confidence by the primary optical setup—centered on a 12MP primary sensor—which maintains pleasing clarity, controlled noise thresholds, and reliable low-light composure.
Longevity is anchored by a 3200mAh battery unit, backed by standard charging speeds designed to comfortably see users through full days of unhindered mobile operation. In conclusion, the vivo X21 represents a sensible, thoroughly calibrated package that satisfies demanding real-world criteria across the board.
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