| Hardware and OS | vivo Y12i | |
| Operating system | Android 9.0 (Pie), Funtouch 9.1 | |
| Processor | Octa-core (4x1.95 GHz Cortex-A53 & 4x1.45 GHz Cortex A53) | |
| Chipset | Qualcomm SDM439 Snapdragon 439 (12 nm) | |
| Internal memory | 32GB 3GB RAM | |
| External memory | microSDXC (uses shared SIM slot) | |
| GPU | Adreno 505 | |
| Display | vivo Y12i | other phones |
| Size | 6.35 inches, 99.6 cm2 | |
| Resolution | 720 x 1544 pixels | |
| Type | IPS LCD | |
| Main Camera | vivo Y12i | other phones |
| Camera | 13 MP, f/2.2, PDAF
2 MP, f/2.4, (depth) | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps | |
| Selfie camera | vivo Y12i | other phones |
| Camera | 8 MP, f/1.8 | |
| Video | 1080p@30fps | |
| Connectivity | vivo Y12i | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | 1, 3, 5, 8, 40 | |
| Bluetooth | 4.0, A2DP, LE | |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | |
| NFC | No | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |
| Technology | GSM / HSPA / LTE | |
| USB | microUSB 2.0, USB On-The-Go | |
| WLAN | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | |
| Multimedia | vivo Y12i | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Radio | FM radio | |
| Battery | vivo Y12i | other phones |
| Type | Li-Po 5000 mAh, non-removable | |
| Charging | Charging 10W | |
| Design | vivo Y12i | other phones |
| Body build | Glass front, plastic back, plastic frame | |
| Colors | Agate Red, Mineral Blue | |
| Dimensions | 159.4 x 76.8 x 8.9 mm (6.28 x 3.02 x 0.35 in) | |
| Weight | 190.5 g (6.74 oz) | |
| SIM | Hybrid Dual SIM (Nano-SIM, dual stand-by) | |
| Features | vivo Y12i | other phones |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity, compass | |
