| Prices | Price (USD) | USD $550.00 USD |
|---|---|---|
| Official Price | Global About 250 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 | 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 |
| 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 (under display, optical), accelerometer, proximity, compass |
| Battery | Type | Li-Ion 3200 mAh, non-removable |
| Charging | 18W wired | |
| Misc | Colors | Black, Ruby Red |
| Models | X21UD A | |
| Price | About 550 EUR |
Mini Review & Verdict
A smart summary of the vivo X21 UD
Advantages
- Luminous AMOLED panel engineered for vivid color accuracy and outdoor readability
- Convenient 3.5mm analog headphone port for zero-latency wired audio
Disadvantages
- Network capability is capped at 4G LTE speeds without native 5G bands
In real-world daily practice, the vivo X21 UD immediately distinguishes itself through balanced ergonomics, tactile button feedback, and approachable pocketability within vivo's mobile lineup. The front panel features a vibrant AMOLED measuring 6.28 inches , ensuring that reading articles, streaming media, and navigating social feeds remain fluid, vibrant, and remarkably gentle on the eyes.
Everyday software responsiveness is driven by the capable Qualcomm SDM660 Snapdragon 660 (14 nm). Routine app launches, web browsing sessions, and casual gaming are handled with dependable stability and efficient thermal behavior. For photography enthusiasts, the main camera setup—centered on a 12MP primary sensor—proves ready to document daily memories with lively color science, snappy shutter response, and commendable sharpness.
Power autonomy is reliably anchored by a 3200mAh battery unit, backed by standard charging speeds to comfortably see users through from morning commutes to late evening unwinding. In essence, the vivo X21 UD strikes a sensible, well-rounded balance that nails fundamental smartphone essentials without unnecessary operational complexity.
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