| Realme C21Y | Realme GT Neo 3 | |
| Specifications | ||
| Brand | Realme | Realme |
| Model | - | - |
| Release Date | July 2021 | March 2022 |
| Operating System | Realme UI (Android 11) | Realme UI (Android 12) |
| Dimensions | ||
| Size | 164.5 x 76.0 x 9.1 mm 6.48 x 2.99 x 0.36 in |
163.3 x 75.6 x 8.2 mm 6.43 x 2.98 x 0.32 in |
| Weight | 200 g 7.05 oz |
188 g 6.63 oz |
| Screen | ||
| Size | 6.5 inches | 6.7 inches |
| Resolution | 720 x 1,600 pixels | 1,080 x 2,412 pixels |
| PPI | 270 | 394 |
| 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 |
Triple camera 50 MP f/1.9 Wide 8 MP f/2.3 Ultra Wide 2 MP f/2.4 Macro |
| Front | 5 MP f/2.2 Wide | 16 MP f/2.5 Wide |
| Storage | ||
| Memory | 3 GB 4 GB |
6 GB 8 GB 12 GB |
| Fixed | 32 GB 64 GB |
128 GB 256 GB |
| Removable | microSDXC | - |
| Processor | ||
| Chip | Unisoc T610 Octa-core processor 12 nm |
MediaTek Dimensity 8100 Octa-core processor 5 nm |
| CPU | 2x 1.80 GHz Cortex-A75 6x 1.80 GHz Cortex-A55 |
4x 2.85 GHz Cortex-A78 4x 2.00 GHz Cortex-A55 |
| GPU | Mali-G52 MC2 | Mali-G610 MC6 |
| Battery | ||
| Capacity | 5,000 mAh | 4,500 mAh |
| Features | - | Fast charging 150W |
| Removable | ||
| Connectivity | ||
| 5G | ||
| NFC | ||
| 3.5 mm Audio Jack | ||
| Micro USB | ||
| USB Type-C | ||
| Lightning | ||