| Vivo X51 5G | Google Pixel 4a 5G | |
| Specifications | ||
| Brand | Vivo | |
| Model | - | - | 
| Release Date | October 2020 | November 2020 | 
| Operating System | Android 10 | Android 11 | 
| Dimensions | ||
| Size | 158.5 x 72.8 x 8.0 mm 6.24 x 2.87 x 0.31 in  | 
                    
                    153.9 x 74.0 x 8.2 mm 6.06 x 2.91 x 0.32 in  | 
                    
                
| Weight | 182 g 6.40 oz  | 
                    
                    168 g 5.93 oz  | 
                    
                
| Screen | ||
| Size | 6.56 inches | 6.2 inches | 
| Resolution | 1,080 x 2,376 pixels | 1,080 x 2,340 pixels | 
| PPI | 398 | 413 | 
| Features | OLED, 90Hz | OLED | 
| Cameras | ||
| Rear | Quad camera 48 MP f/1.6 Wide 8 MP f/2.2 Ultra Wide 13 MP f/2.5 Telephoto 8 MP f/3.4 Periscope Telephoto  | 
                    
                    Dual camera 12 MP f/1.7 Wide 16 MP f/2.2 Ultra Wide  | 
                    
                
| Front | 32 MP f/2.5 Wide | 8 MP f/2.0 Wide | 
| Storage | ||
| Memory | 8 GB | 6 GB | 
| Fixed | 256 GB | 128 GB | 
| Removable | - | - | 
| Processor | ||
| Chip | Qualcomm Snapdragon 765G 5G SM7250 Octa-core processor 7 nm  | 
                    
                    Qualcomm Snapdragon 765G 5G SM7250 Octa-core processor 7 nm  | 
                    
                
| CPU | 1x 2.40 GHz Kryo 475 Prime 1x 2.20 GHz Kryo 475 Gold 6x 1.80 GHz Kryo 475 Silver  | 
                    
                    1x 2.40 GHz Kryo 475 Prime 1x 2.20 GHz Kryo 475 Gold 6x 1.80 GHz Kryo 475 Silver  | 
                    
                
| GPU | Adreno 620 | Adreno 620 | 
| Battery | ||
| Capacity | 4,315 mAh | 3,885 mAh | 
| Features | Fast charging 33W | Fast charging 18W | 
| Removable | ||
| Connectivity | ||
| 5G | ||
| NFC | ||
| 3.5 mm Audio Jack | ||
| Micro USB | ||
| USB Type-C | ||
| Lightning | ||