| Hardware and OS | Vivo Y66i | |
| Operating system | Android 7.1 Nougat OS | |
| Processor | Quad-Core 1.4GHz ARM Cortex A53 CPU Clock | |
| GPU | Qualcomm Adreno 308, 500MHz | |
| RAM | 3GB | |
| Internal Storage | 32GB | |
| Memory Card Slot | microSD, microSDHC, microSDXC | |
| User Interface | Yes with Funtouch OS 3.2 | |
| Display | Vivo Y66i | other phones |
| Type | IPS, LCD capacitive touchscreen | |
| Size | 5.5 inches HD | |
| Resolution | 1280 x 720 Pixels, 24 bit color depth | |
| Colors | 16M Colors | |
| Pixel Density | ~ 267 ppi | |
| Touchscreen | Yes Multi Touch Support | |
| Protection | Yes | |
| Features | IPS, HD Display, ~ 267 PPI Pixel Density, Capacitive Multi-touch, Scratch Resistant, 2.5D Curved Glass Screen | |
| Connectivity | Vivo Y66i | other phones |
| 4G Network | LTE : 850/ 1800 / 2100 MHz, LTE-TDD : 1900 MHz (Band 39), LTE-TDD : 2300 MHz (Band 40), LTE-TDD : 2500 MHz (Band 41), LTE-TDD : 2600 MHz (Band 38) | |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi HotSpot | |
| GPS | Yes, with GPS, A-GPS | |
| NFC | No | |
| USB | Micro USBv2.0 with Charging and Mass Storage Function | |
| Speed | LTE Cat-4 150 Mbps Download, 50 Mbps Upload, HSUPA 5.76 Mbps Upload, HSDPA 21 Mbps Download, EV-DO Rev.A 1.8 Mbps Upload, 3.1 Mbps Download | |
| SIM | Standard SIM | |
| Dual SIM | (Nano-SIM, Nano-SIM), Dual Standby | |
| Camera | Vivo Y66i | other phones |
| Main camera | 13 Megapixels with Single-LED and AF Rear Camera | |
| Features | Yes with Single-LED Flash | |
| Image | 4160 x 3120 Pixels | |
| Selfie camera | 5 Megapixel Front Camera | |
| Multimedia | Vivo Y66i | other phones |
| Loudspeaker | Yes with Single Speaker | |
| Radio | Yes | |
| Video Playback | Up to 7.5 Hours | |
| Video Out | Yes With Wireless Media Link | |
| Ring Tones | AAC, WAV ringtones | |
| 3.5 mm Jack | yes | |
| Design | Vivo Y66i | other phones |
| Dimensions | 6.04 in x 2.98 in x 0.29 in | |
| Weight | 157 Grams (With Battery) | |
| Battery | Vivo Y66i | other phones |
| Capacity | 3,000 mAh | |
| Placement | Non-Removable | |
| Other | Vivo Y66i | other phones |
| Sensors | Accelerometer, Proximity, Light, Gyroscope Sensor | |
