| Brand: | Vivo |
| Model: | Y55s |
| Type: | Smartphone |
| Release Date: | 2017, February |
| Size: | 5.2 inches, 74.5 cm2 (~69.1% screen-to-body ratio) |
| Resolution: | 720 x 1280 pixels, 16:9 ratio (~282 ppi density) |
| Technology: | IPS LCD |
| Main Specs: | 13 MP, f/2.2, AF |
| Main Features: | LED flash, HDR, panorama |
| Main Video: | 1080p@30fps |
| Selfie Specs: | 5 MP, f/2.2 |
| Capacity: | Li-Ion 2730 mAh, non-removable |
| Type: | Li-Ion |
| Chipset: | Qualcomm MSM8917 Snapdragon 425 (28 nm) |
| Ram: | 2GB |
| Storage: | 16GB |
| Expandable: | microSDXC (dedicated slot) |
| Dimensions: | 147.9 x 72.9 x 7.5 mm (5.82 x 2.87 x 0.30 in) |
| Weight: | 142 g (5.01 oz) |
| Wifi: | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| Bluetooth: | 4.2, A2DP, LE |
| Nfc: | No |
| Usb: | microUSB 2.0, USB On-The-Go |
| Headphone Jack: | Yes |
| Network: | GSM / HSPA / LTE |
| Sensors: | Accelerometer, proximity, compass |
| Colors: | Crown Gold, Rose Gold, Space Gray |