VIVO X21I A Phone
| Network | GSM, CDMA, WCDMA, CDMA2000, TD/SCDMA, LTE, LTE-A, TD-LTE, GPRS, EDGE, EV-DO | |
|---|---|---|
| GSM | 850, 900, 1800, 1900 | |
| CDMA | 800 | |
| WCDMA | 850, 900, 1900, 2100 | |
| CDMA2000 | ||
| TD/SCDMA | 1900, 2000 | |
| LTE | 850, 900, 1700, 1800, 2100 | |
| TD-LTE | ||
| GPRS | ||
| EDGE | ||
| EV-DO | ||
| HSPA Speed | Up to 21.1 Mbps | |
| LTE Speed | Up to 303 Mbps Up to 50 Mbps | |
| Display | Primary | SUPER AMOLED 6.28" 2280 x 1080 pixels 16M colors 402 ppi |
| Secondary | ||
| Camera | Primary | 12 MP + 5 MP 4000 x 3000 pixels LED flash F/1.8 aperture, Sensor type: CMOS, Autofocus, Continuous shooting, Digital zoom, Optical image stabilization, Geotagging, Panorama, HDR, Touch focus, Face detection, White balance settings, ISO settings, Exposure compensation, Self-timer, Scene mode, Phase detection with Dual Pixel |
| Video | 1920 x 1080 pixels 1080p@30fps, Slow motion | |
| Secondary | 24 MP 5632 x 4224 pixels 1080p@30fps, Senzor type: CMOS BSI (backside illumination), Aperture: f/2, Sensor model: Samsung S5K2L8, Face recognition | |
| CPU | Chipset | MediaTek Helio P60 MT6771 |
| CPU Speed | 4 x 2 GHz + 4 x 2 GHz | |
| GPU | ARM Mali-G72 MP3 | |
| Memory | RAM | 4, 6 GB |
| Internal | 64, 128 GB | |
| Memory Card | MicroSD, U to 256 GB | |
| OS | System | Funtouch OS Based on Android 8.1 Oreo |
| General | SIM | Nano-SIM, Dual-SIM |
| Dimension | 154.37 x 74.98 x 6.99 mm | |
| Weight | 159 g | |
| Released | 2018, May | |
| Announced | 2018, May | |
| Colors | black, runy red, aurora white | |
| Connectivity | USB | Micro-USB 2.0 OTG 1.3, Fast charging, Mass storage |
| WI-FI | 802.11 a/b/g/n/ac 1 | |
| Infrared | ||
| NFC | ||
| Hotknot | ||
| HDMI | ||
| GPS | GLONASS, A-GPS, BeiDou, QuickGPS, S-GPS | |
| Bluetooth | 5.0 A2DP, AVRCP | |
| Features | Sensors | Proximity, Light, Accelerometer, Compass, Gyroscope, Fingerprint |
| Waterproof | ||
| Dustproof | ||
| Shock resistant | ||
| Sound | Headphone | 3.5mm |
| Battery | Capacity | 3245 mAh Li-Po |








