key specs |
Display | 6.41-inch | 6.00-inch | 6.20-inch | 5.86-inch |
Processor | Qualcomm Snapdragon 660 | MediaTek Helio P22 | Qualcomm Snapdragon 450 | MediaTek Helio P60 |
Front Camera | 24.8-megapixel | 8-megapixel | 8-megapixel | 8-megapixel |
Rear Camera | 12-megapixel + 5-megapixel | 13-megapixel + 5-megapixel | 13-megapixel + 2-megapixel | 13-megapixel + 5-megapixel |
RAM | 6GB | 3GB | 3GB | 3GB |
Storage | 128GB | 32GB | 32GB | 32GB |
Battery Capacity | 3400mAh | 3500mAh | 4230mAh | 3060mAh |
OS | Android 8.1 Oreo | Android 8.1 Oreo | Android 8.1 | Android 8.1 |
Resolution | 1080x2340 pixels | 720x1440 pixels | 720x1520 pixels | 720x1520 pixels |
general |
Brand | Vivo | Nokia | Realme | Nokia |
Model | X21s | 3.1 Plus | 2 | 5.1 Plus |
Release date | November 1, 2018 | October 1, 2018 | August 1, 2018 | August 1, 2018 |
Form factor | Touchscreen | Touchscreen | Touchscreen | Touchscreen |
Dimensions (mm) | 157.91 x 75.08 x 7.90 | 156.68 x 76.44 x 8.19 | 156.20 x 75.60 x 8.20 | 149.51 x 71.98 x 8.10 |
Weight (g) | 156.00 | 180.00 | 168.00 | 160.00 |
Battery capacity (mAh) | 3400 | 3500 | 4230 | 3060 |
Colours | Starry Night Black | Blue, White, Baltic | Diamond Black, Diamond Blue, Diamond Red | Gloss Black, Gloss White, Midnight Gloss Blue |
Launched in India | - | Yes | Yes | Yes |
Body type | - | Metal | - | - |
Removable battery | - | No | - | No |
Wireless charging | - | No | - | No |
display |
Screen size (inches) | 6.41 | 6.00 | 6.20 | 5.86 |
Touchscreen | Yes | Yes | Yes | Yes |
Resolution | 1080x2340 pixels | 720x1440 pixels | 720x1520 pixels | 720x1520 pixels |
Aspect ratio | 19.5:9 | 18:9 | 19:9 | 19:9 |
Protection type | - | - | Gorilla Glass | - |
Pixels per inch (PPI) | - | - | 271 | - |
hardware |
Processor | octa-core | 1.5GHz octa-core (4x2GHz + 4x1.5GHz) | 1.8GHz octa-core | 1.8GHz octa-core |
Processor make | Qualcomm Snapdragon 660 | MediaTek Helio P22 (MT6762) | Qualcomm Snapdragon 450 | MediaTek Helio P60 (MT6771) |
RAM | 6GB | 3GB | 3GB | 3GB |
Internal storage | 128GB | 32GB | 32GB | 32GB |
Expandable storage | Yes | Yes | Yes | Yes |
Expandable storage type | microSD | microSD | microSD | microSD |
Expandable storage up to (GB) | 256 | - | 256 | 400 |
Dedicated microSD slot | - | Yes | - | No |
camera |
Rear camera | 12-megapixel + 5-megapixel | 13-megapixel (f/2.0, 1.12-micron) + 5-megapixel (f/2.4, 1.12-micron) | 13-megapixel (f/2.2, 1.12-micron) + 2-megapixel (f/2.4, 1.75-micron) | 13-megapixel (f/2.0) + 5-megapixel |
Rear autofocus | Yes | Phase detection autofocus | - | Phase detection autofocus |
Front camera | 24.8-megapixel | 8-megapixel (f/2.2, 1.12-micron) | 8-megapixel (f/2.2, 1.12-micron) | 8-megapixel (f/2.2) |
Rear flash | - | LED | Yes | LED |
Front flash | - | No | - | - |
Front autofocus | - | - | - | No |
software |
Operating system | Android 8.1 Oreo | Android 8.1 Oreo | Android 8.1 | Android 8.1 |
Skin | - | - | ColorOS 5.1 | - |
connectivity |
Wi-Fi | Yes | Yes | Yes | Yes |
GPS | Yes | Yes | Yes | Yes |
Bluetooth | Yes | Yes, v 4.20 | Yes, v 4.20 | Yes, v 4.20 |
Micro-USB | Yes | Yes | Yes | - |
Headphones | 3.5mm | 3.5mm | 3.5mm | 3.5mm |
Number of SIMs | 2 | 2 | 2 | 2 |
Wi-Fi standards supported | - | 802.11 b/g/n | - | 802.11 a/b/g/n/ac |
NFC | - | No | - | No |
Infrared | - | No | - | - |
USB OTG | - | Yes | - | Yes |
USB Type-C | - | No | - | Yes |
FM | - | Yes | - | Yes |
Active 4G on both SIM cards | - | Yes | - | Yes |
sim 1 |
GSM/CDMA | GSM | GSM | GSM | GSM |
3G | Yes | Yes | Yes | Yes |
4G/ LTE | Yes | Yes | Yes | Yes |
SIM Type | - | Nano-SIM | Nano-SIM | Nano-SIM |
sim 2 |
GSM/CDMA | GSM | GSM | GSM | GSM |
3G | Yes | Yes | Yes | Yes |
4G/ LTE | Yes | Yes | Yes | Yes |
SIM Type | - | Nano-SIM | Nano-SIM | Nano-SIM |
sensors |
Face unlock | Yes | Yes | Yes | Yes |
Fingerprint sensor | Yes | Yes | Yes | - |
Compass/ Magnetometer | Yes | Yes | Yes | Yes |
Proximity sensor | Yes | Yes | Yes | Yes |
Accelerometer | Yes | Yes | Yes | Yes |
Ambient light sensor | Yes | Yes | Yes | Yes |
Gyroscope | Yes | Yes | - | Yes |
Barometer | - | No | - | - |
Temperature sensor | - | No | - | - |
ratings |
Overall NDTV Rating | - | Read Review | Read Review | Read Review |
Design Rating | - | | | |
Display Rating | - | | | |
Software Rating | - | | | |
Performance Rating | - | | | |
Battery Life Rating | - | | | |
Camera Rating | - | | | |
Value for Money Rating | - | | | |