UmiDigi Bison X20 vs Vivo Y31 5G

At a glance

Brand: UMiDIGI; vivo
Release date: April 2024, 2 years 2 months ago; September 2025, 9 months ago
AnTuTu: 142.000 Antutu v9 Overall performance better than 53% of devices; 456.552 Antutu v10 Overall performance better than 71% of devices

Size: 6.53"; 6.68"
Resolution: 720 x 1600 px HD+; 720 x 1608 px HD+
Type: LCD IPS; LCD IPS
Density: 269 ppi Medium Density; 264 ppi Medium Density
Aspect ratio: 20:9; 20:9
Features: Water Drop Notch, Scratch resistant, Capacitive, Multi-touch; Hole-punch Notch, SGS Certified, Refresh rate 120 Hz, Max brightness HBM - 1000 cd/m², 1500:1 contrast ratio, Color LED Notifications, Scratch resistant, 2.5D curved glass screen, Capacitive, Frameless

Chipset: MediaTek Helio P60 (MT6771); Qualcomm Snapdragon 4 Gen 2 (SM4450)
CPU: 4x Cortex A73 2.0 GHz + 4x Cortex A53 2.0 GHz; 2x2.2 GHz Cortex A76 +6x 2.0 GHz Cortex A55
CPU type: Octa-Core; Octa-Core
Process: 12 nm; 4 nm
Frequency: 2 GHz; 2.2 GHz
GPU: ARM Mali-G72 MP3 700MHz; Qualcomm Adreno
RAM: 6 GB; 4 GB
RAM type: LPDDR3 RAM; LPDDR4X RAM
64-bit: Yes; Yes

Resolution: 20 Mpx; 50 Mpx
Aperture: ƒ/ 2.2; ƒ/ 1.8
Flash: LED; LED
Optical stabilization: No; No
Slow motion: No, 30 fps; Yes, 120 fps
Features: Digital zoom, Dual camera, Digital image stabilization, Autofocus, Touch focus, Phase detection autofocus (PDAF), Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer; Flicker sensor, Digital zoom, Dual camera, Digital image stabilization, Autofocus, Touch focus, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer

Capacity: 128 GB; 128 GB
Type: eMMC 5.1 Storage; eMMC 5.1 Storage
SD slot: Yes , Slot for SD or second SIM card; Yes , Slot for SD or second SIM card

Dimensions: 83.8 mm 172.1 mm 12.9 mm Print 3D Model; 77.0 mm 166.1 mm 8.4 mm Print 3D Model
Weight: 278 g; 209 g
Materials: Rubber , Rugged Smartphone, Plastic; Plastic
Colors: Gray; Red Green
Water/dust resistance: IP68, MIL-STD-810G , IP69; IP64 , MIL-STD-810H
Usable surface: 71 %; 83 %

Operating system: Android 13 Tiramisu Android 13; Android 15 Funtouch OS 15 (Android 15)
Google services: With Google Mobile Services; With Google Mobile Services

SIM: Dual SIM Dual Standby (Nano SIM + Nano SIM); Dual SIM Dual Standby (Nano SIM + Nano SIM)
Bluetooth: Bluetooth 5.0; Bluetooth 4.2 LELow energy consumption
Bluetooth profiles: A2DP (Advanced Audio Distribution Profile), HID (Human Interface Profile); A2DP (Advanced Audio Distribution Profile), EDR (Enhanced Data Rate), HID (Human Interface Profile), LE (Low Energy), APT-x, SBC
Wi-Fi: 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz; 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac
Wi-Fi features: Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display; Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display
USB: USB Type-C; USB Type-C
USB features: Charging, OTG; Charging, OTG
Navigation: GPS, A-GPS, GLONASS, Galileo; GPS, A-GPS, GLONASS, Beidou, QZSS

4G LTE: B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B17 (700), B18 (800), B19 (800), B20 (800), B28a (700), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500); B1 (2100), B3 (1800), B5 (850), B8 (900), B28b (700), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500)
3G: B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B8 (900); B1 (2100), B5 (850), B8 (900)
2G: CDMA BC0 (800), CDMA BC1 (1900), B2 (1900), B3 (1800), B5 (850), B8 (900); B3 (1800), B5 (850), B8 (900)
5G: —; n1 (2100), n3 (1800), n5 (850), n8 (900), n28b (700), n40 (2300), n77 (3700), n78 (3500)