| Realme C21 | Sony Xperia Pro-I | |
| Specifications | ||
| Brand | Realme | Sony |
| Model | - | - |
| Release Date | March 2021 | December 2021 |
| Operating System | Realme UI (Android 10) | Android 11 |
| Dimensions | ||
| Size | 165.2 x 76.4 x 8.9 mm 6.50 x 3.01 x 0.35 in |
166.0 x 72.0 x 8.9 mm 6.54 x 2.83 x 0.35 in |
| Weight | 190 g 6.70 oz |
221 g 7.80 oz |
| Screen | ||
| Size | 6.5 inches | 6.5 inches |
| Resolution | 720 x 1,600 pixels | 1,644 x 3,840 pixels |
| PPI | 270 | 643 |
| Features | - | OLED, 120Hz |
| Cameras | ||
| Rear | Triple camera 13 MP f/2.2 Wide 2 MP f/2.4 Macro 2 MP f/2.4 Depth |
Quad camera 12 MP f/2.0 Wide 12 MP f/2.2 Ultra Wide 12 MP f/2.4 Telephoto ToF |
| Front | 5 MP f/2.2 Wide | 8 MP f/2.0 Wide |
| Storage | ||
| Memory | 3 GB 4 GB |
12 GB |
| Fixed | 32 GB 64 GB |
512 GB |
| Removable | microSDXC | microSDXC |
| Processor | ||
| Chip | MediaTek Helio G35 Octa-core processor 12 nm |
Qualcomm Snapdragon 888 5G SM8350 Octa-core processor 5 nm |
| CPU | 4x 2.30 GHz Cortex-A53 4x 1.80 GHz Cortex-A53 |
1x 2.84 GHz Kryo 680 Prime 3x 2.42 GHz Kryo 680 Gold 4x 1.80 GHz Kryo 680 Silver |
| GPU | PowerVR GE8320 | Adreno 660 |
| Battery | ||
| Capacity | 5,000 mAh | 4,500 mAh |
| Features | - | Fast charging 30W |
| Removable | ||
| Connectivity | ||
| 5G | ||
| NFC | ||
| 3.5 mm Audio Jack | ||
| Micro USB | ||
| USB Type-C | ||
| Lightning | ||