| Vivo V9 | Vivo Y91 | |
| Specifications | ||
| Brand | Vivo | Vivo |
| Model | - | - |
| Release Date | April 2018 | November 2018 |
| Operating System | Android 8.1 | Android 8.1 |
| Dimensions | ||
| Size | 154.8 x 75.1 x 7.9 mm 6.09 x 2.96 x 0.31 in |
155.1 x 75.1 x 8.3 mm 6.11 x 2.96 x 0.33 in |
| Weight | 150 g 5.29 oz |
164 g 5.77 oz |
| Screen | ||
| Size | 6.3 inches | 6.22 inches |
| Resolution | 1,080 x 2,280 pixels | 720 x 1,520 pixels |
| PPI | 400 | 270 |
| Features | - | - |
| Cameras | ||
| Rear | Dual camera 16 MP f/2.0 5 MP f/2.4 Depth |
Dual camera 13 MP f/2.2 2 MP f/2.4 Depth |
| Front | 24 MP f/2.0 Wide | 8 MP f/1.8 |
| Storage | ||
| Memory | 4 GB | 2 GB 3 GB |
| Fixed | 64 GB | 16 GB 32 GB |
| Removable | microSDXC | microSDXC |
| Processor | ||
| Chip | Qualcomm Snapdragon 626 MSM8953-Pro Octa-core processor 14 nm |
Qualcomm Snapdragon 439 SDM439 Octa-core processor 12 nm |
| CPU | 8x 2.20 GHz Cortex-A53 | 4x 1.95 GHz Cortex-A53 4x 1.45 GHz Cortex-A53 |
| GPU | Adreno 506 | Adreno 505 |
| Battery | ||
| Capacity | 3,260 mAh | 4,030 mAh |
| Features | - | - |
| Removable | ||
| Connectivity | ||
| 5G | ||
| NFC | ||
| 3.5 mm Audio Jack | ||
| Micro USB | ||
| USB Type-C | ||
| Lightning | ||