On this page we compare specs Vivo Y31 2021 Qualcomm Snapdragon 662 with vivo Y91 Octa-core (2x1.95 GHz Cortex-A53 & 6x1.45 GHz Cortex A53), we compare external dimensions, compare screens and performance, the amount of RAM and memory for storing media data, battery capacity and characteristics of photo cameras, compare the presence of various sensors and functions.
| Hardware and OS | Vivo Y31 2021 | vivo Y91 |
|---|
| Operating system | Android v11 | Android 8.1 (Oreo); Funtouch 4.5 |
| Processor | Octa core (2 GHz, Quad core, Kryo 260 1.8 GHz, Quad core, Kryo 260) | Octa-core (2x1.95 GHz Cortex-A53 & 6x1.45 GHz Cortex A53) |
| Custom UI | Funtouch OS | |
| Chipset | Qualcomm Snapdragon 662 | Qualcomm SDM439 Snapdragon 439 (12 nm) |
| GPU | Adreno 610 | Adreno 505 |
| Internal memory | | 32 GB, 3 GB RAM16 GB, 2 GB RAM |
| External memory | | microSD, up to 256 GB |
| Internal Storage | 128 GB | |
| Expandable memory | Yes, Upto 1TB | |
| RAM | 6 GB | |
| Display | Vivo Y31 2021 | vivo Y91 |
|---|
| Type | | IPS LCD |
| Size | | 6.22" inc |
| Resolution | | 720 x 1520 px |
| Touchscreen | | capacitive touchscreen |
| Screen-to-Body Ratio | | 82.9% |
| Display area | | 96.6 cm2 |
| Display aspect ratio | | 19:9 (height:width) |
| Pixel Density | | 270 PPI |
| Colors | | 16M |
| Connectivity | Vivo Y31 2021 | vivo Y91 |
|---|
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | | HSDPA 850 / 900 / 2100 |
| 4G Network | | LTE band 1(2100), 3(1800), 5(850), 40(2300), 41(2500) |
| Wi-Fi | Yes, Wi-Fi 802.11, b/g/n/n 5GHz | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | | GSM / HSPA / LTE |
| SIM size | SIM1: Nano, SIM2: Nano | |
| SIM card | | Dual SIM (Nano-SIM, dual stand-by) |
| Dual SIM | Dual SIM, GSM GSM | |
| Bluetooth | Yes, v5.0 | 4.2, A2DP, LE |
| Edge | | Yes |
| Network support | 4G , 3G, 2G | |
| USB connectivity | Mass storage device, USB charging | |
| GPRS | | Yes |
| USB TYPE-C | Yes | |
| GPS | Yes, with A-GPS, Glonass | Yes, with A-GPS, GLONASS, BDS |
| Speed | | HSPA 42.2/5.76 Mbps, LTE Cat5 150/75 Mbps |
| USB | | microUSB 2.0, USB On-The-Go |
| Camera | Vivo Y31 2021 | vivo Y91 |
|---|
| Aperture | F2.0 | |
| Autofocus | Yes | |
| Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
| Image | 8000 x 6000 Pixels | |
| Flash | Yes, LED Flash | |
| Front camera | 16 MP | |
| Front camera resolution | 16 MP f/2.0, Wide Angle Primary Camera | |
| Video recording | 1920x1080 @ 30 fps | |
| Main camera | 48 MP 2 MP 2 MP | 13 MP, Dual |
| Specs | | 13 MP, f/2.2, PDAF
-2 MP, f/2.4, depth sensor |
| Features | | LED flash, panorama |
| Video | | 1080p@30fps |
| Selfie camera | | 8 MP, Single |
| Multimedia | Vivo Y31 2021 | vivo Y91 |
|---|
| Audio jack | 3.5 MM | |
| FM radio | Yes | |
| Loudspeaker | Yes | |
| 3.5 mm Jack | | Yes |
| Radio | | FM radio |
| Design | Vivo Y31 2021 | vivo Y91 |
|---|
| Height | 163.8 mm | |
| Colors | Ocean Blue, Racing Black | Starry Black, Ocean Blue, Red (Y91i only) |
| Width | 75.3 mm | |
| Dimensions | | 155.1 x 75.1 x 8.3 mm |
| Thickness | 8.3 mm | |
| Weight | 188 grams | 163.5 g |
| Battery | Vivo Y31 2021 | vivo Y91 |
|---|
| Capacity | 5000 mAh | |
| Type | Li-Polymer | |
| User replaceable | No | |
| Quick charging | Yes, Fast, 18W: 70 % in 64 minutes | |
| Battery capacity | | 4030 mAh, Non-removable Li-Po |
| Features | Vivo Y31 2021 | vivo Y91 |
|---|
| Fingerprint sensor position | Side | |
| Fingerprint sensor | Yes | |
| Other sensors | Light sensor, Proximity sensor, Accelerometer, Compass | |
| Other | Vivo Y31 2021 | vivo Y91 |
|---|
| Release date | | 2018, November |
| Sensors | | Fingerprint (rear-mounted), accelerometer, proximity, compass |
