| Realme C31 vs C21Y Vs Tecno Spark 8C Comparison | |||
| Brand | Realme | Tecno | Realme |
| Model | C31 | Spark 8C | C21Y |
| Dimensions (mm) | 164.74 x 76.19 x 8.43 | 164.57 x 76.00 x 8.95 | 164.50 x 76.00 x 9.10 |
| Weight (g) | 197 | 200 | 200 |
| Battery capacity (mAh) | 5000 | 5000 | 5000 |
| Form factor | Touchscreen | Touchscreen | Touchscreen |
| Colours | Light Silver | Diamond Grey | Cross Black |
| Dark Green | Turquoise Cyan | Cross Blue | |
| – | Magnet Black | – | |
| – | Iris Purple | – | |
| Fast charging | 10w Fast Charge | – | – |
| Realme C31 vs C21Y Vs Tecno Spark 8C Display Compare | |||
| Refresh Rate | 60 Hz | 90 Hz | 60 Hz |
| Resolution Standard | HD+ | – | HD+ |
| Screen size (inches) | 6.52 | 6.6 | 6.5 |
| Touchscreen | Yes | Yes | Yes |
| Resolution | 720×1600 pixels | 720×1612 pixels | 720×1600 pixels |
| Pixels per inch (PPI) | 269 | 262 | 269 |
| Aspect ratio | 20:08 | – | 20:09 |
| Realme C31 vs C21Y Vs Tecno Spark 8C Compare Hardware | |||
| Processor | 1.8GHz MHz octa-core | octa-core | octa-core |
| Processor make | Unisoc T612 | Mediatek MT6762 Helio P22 (12 nm) | Unisoc T610 |
| RAM | 3GB/4GB | 3GB/4GB | 3GB/4GB |
| Internal storage | 32GB/64GB | 64GB | 32GB/64GB |
| Expandable storage | Yes | Yes | Yes |
| Expandable storage type | microSD | SD card | microSD |
| Expandable storage up to (GB) | 1024 | 256 | 256 |
| Dedicated microSD slot | Yes | Yes | Yes |
| Realme C31 vs C21Y Vs Tecno Spark 8C Compare Camera | |||
| Rear camera | 13-megapixel (f/2.2) | 13-megapixel (f/1.8) | 13-megapixel (f/2.2) |
| 2-megapixel (f/2.4) | AI lens | 2-megapixel (f/2.4) | |
| Monochrome (f/2.8) | – | 2-megapixel (f/2.4) | |
| No. of Rear Cameras | 3 | 2 | 3 |
| Front camera | 5-megapixel | 8-megapixel | 5-megapixel (f/2.4) |
| No. of Front Cameras | 1 | 1 | 1 |
| Rear autofocus | Yes | Yes | Yes |
| Rear flash | Yes | Yes | Yes |
| Front flash | Yes | Yes | – |
| Realme C31 vs C21Y Vs Tecno Spark 8C Compare Software | |||
| Operating system | Android 11 | Android 11 | Android 11 |
| Skin | Realme R UI | HiOS | Realme UI |
| Realme C31 vs C21Y Vs Tecno Spark 8C Compare Connectivity | |||
| Network | 4G, 3G, 2G | 4G, 3G, 2G | 4G, 3G, 2G |
| Wi-Fi | Yes | Yes | Yes |
| Wi-Fi standards supported | IEEE 802.11 b/g/n (WiFi 4) (2.4 GHz) | – | – |
| GPS | Yes | Yes | Yes |
| Bluetooth | Yes, v 5.00 | Yes | Yes, v 5.00 |
| Micro-USB | Yes | – | Yes |
| Headphones | 3.5mm | 3.5mm | 3.5mm |
| Number of SIMs | 2 | 2 | 2 |
| Active 4G on both SIM cards | Yes | Yes | Yes |
| NFC | No | Yes | No |
| USB Connectivity OTG | Yes | Yes | Yes |
| FM | No | Yes | – |
| Infrared | No | No | – |
| Audio Jack | 3.5mm | 3.5mm | 3.5mm |
| Realme C31 vs C21Y Vs Tecno Spark 8C Compare Sensors | |||
| Fingerprint sensor | Yes | Yes | Yes |
| Proximity sensor | Yes | Yes | Yes |
| Accelerometer | Yes | Yes | Yes |
| Ambient light sensor | Yes | Yes | Yes |
| Compass/ Magnetometer | Yes | – | Yes |
| Realme C31 vs C21Y Vs Tecno Spark 8C Compare Special features | |||
| Special features | Dual RAM Channel | – | eMMC5.1 ROM |
| Reverse Charging | – | Reverse Charging | |
| – | – | – | |