Vivo X21i mobile was launched in May 2018. The phone comes with a 6.28-inch touchscreen display offering a resolution of 1080×2280 pixels. Vivo X21i is powered by a 2GHz octa-core MediaTek Helio P60 (MT6771) processor. It comes with 4GB of RAM. The Vivo X21i runs Android 8.1 and is powered by a 3245mAh battery.
As far as the cameras are concerned, the Vivo X21i on the rear packs 12-megapixel camera. It sports a 24-megapixel camera on the front for selfies.
The Vivo X21i runs Funtouch OS 4 is based on Android 8.1 and packs 64GB of inbuilt storage that can be expanded via microSD card (up to 256GB). The Vivo X21i is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The Vivo X21i measures 154.37 x 74.98 x 6.99mm (height x width x thickness) and weighs 159.00 grams. It was launched in Aurora White, Polar Night, and Ruby Red colours.
Connectivity options on the Vivo X21i include Wi-Fi 802.11 b/g/n, GPS, USB OTG, FM radio, 3G, and 4G (with support for Band 40 used by some LTE networks in India). Sensors on the phone include accelerometer, ambient light sensor, gyroscope, and proximity sensor.
Vivo X21i Full Specifications
| Brand | Vivo |
| Model | X21i |
| Release date | May 2018 |
| Form factor | Touchscreen |
| Dimensions (mm) | 154.37 x 74.98 x 6.99 |
| Weight (g) | 159.00 |
| Battery capacity (mAh) | 3245 |
| Colours | Aurora White, Polar Night, Ruby Red |
| Screen size (inches) | 6.28 |
| Touchscreen | Yes |
| Resolution | 1080×2280 pixels |
| Processor | 2GHz octa-core |
| Processor make | MediaTek Helio P60 (MT6771) |
| RAM | 4GB |
| Internal storage | 64GB |
| Expandable storage | Yes |
| Expandable storage type | microSD |
| Expandable storage up to (GB) | 256 |
| Rear camera | 12-megapixel |
| Rear flash | Dual LED |
| Front camera | 24-megapixel |
| Operating system | Android 8.1 |
| Skin | Funtouch OS 4 |
| Wi-Fi | Yes |
| Wi-Fi standards supported | 802.11 b/g/n |
| GPS | Yes |
| Bluetooth | Yes |
| USB OTG | Yes |
| FM | Yes |
| Number of SIMs | 2 |
| SIM 1 | |
| SIM Type | Nano-SIM |
| GSM/CDMA | GSM |
| 3G | Yes |
| 4G/ LTE | Yes |
| Supports 4G in India (Band 40) | Yes |
| SIM 2 | |
| SIM Type | Nano-SIM |
| GSM/CDMA | GSM |
| 3G | Yes |
| 4G/ LTE | Yes |
| Supports 4G in India (Band 40) | Yes |
| Proximity sensor | Yes |
| Accelerometer | Yes |
| Ambient light sensor | Yes |
| Gyroscope | Yes |
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