Vivo X51 5G vs Vivo X30 5G
| Type | Touch | Touch | 
| Dimensions | 158.46 x 72.80 x 8.04 mm | 158.45 x 74.10 x 8.80 mm | 
| Weight | 181.50 g | 196.50 g | 
| Display size | 6.56" | 6.44" | 
| Display | Color / AMOLED 16M colors 90 Hz 1080 x 2378 px (6.56") 398 ppi | Color / Super AMOLED 16M colors 1080 x 2400 px (6.44") 409 ppi | 
| Display protection | ||
| Additional display | ||
| Protection of the secondary display | ||
| Standard battery | Li-Ion 4315 mAhBuy powerbank | Li-Ion 4350 mAhBuy powerbank | 
| Quick battery charging | ||
| Wireless battery charging | ||
| Internal memory | 256 GB | 128 GB | 
| RAM memory | 8 GB | 8 GB | 
| Memory cards | ||
| Operating system | Android 10 | Android 9.0 Pie | 
| Interface | Funtouch 10 | Funtouch 10 | 
| Processor | Qualcomm Snapdragon 765G SM7250-AB | Samsung Exynos 980 | 
| Processor clock | 2400 MHz | 2200 MHz | 
| GPU | Adreno 620 | ARM Mali-G76 MP5 | 
| Touchscreen | ||
| DualSIM | ||
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | DualSIM(nanoSIM, nanoSIM) | 
| DualSIM mode | dual standby | dual standby | 
| Announced | 4Q 2020 | 4Q 2019 | 
| Other names | - | - | 
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 | 
| UMTS | 850 900 1700 1900 2100 | 850 900 1700 1900 2100 | 
| LTE standard | FDD LTE: 2600, 2100, 1900, 1800, 1700, 1500, 900, 850, 800, 700, 700 TDD LTE: 2600, 2500, 2300, 1900 | FDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850 TDD LTE: 2600, 2500, 2300, 2100, 1900 | 
| Standard 5G | FDD 5G: 2600, 2100, 1800, 900, 700 TDD 5G: 3700, 3500, 2600, 2500 | TDD 5G: 3500, 2500 | 
| CDMA | 850 CDMA2000 1X | 850 CDMA2000 1xEV-DO | 
| Standard TD-SCDMA | 1900 2000 | |
| UMA | 
 
            
