UmiDigi G100X vs Vivo Y31 5G

At a glance

Brand: UMiDIGI; vivo
Release date: February 2026, 4 months ago; September 2025, 9 months ago
AnTuTu: 345.000 Antutu v11 Overall performance better than 63% of devices; 456.552 Antutu v10 Overall performance better than 71% of devices

Size: 6.9"; 6.68"
Resolution: 720 x 1640 px HD+; 720 x 1608 px HD+
Type: LCD IPS; LCD IPS
Density: 260 ppi Medium Density; 264 ppi Medium Density
Aspect ratio: 21:9; 20:9
Features: Water Drop Notch, Refresh rate 120 Hz, Brightnes 500 cd/m² (typ), 2.5D curved glass screen, Capacitive, Multi-touch, Frameless, In-cell; 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 G81 (MT6769); Qualcomm Snapdragon 4 Gen 2 (SM4450)
CPU: 2x Cortex A75 2.0 GHz + 6x Cortex A55 1.7 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-G52 MC2; Qualcomm Adreno
RAM: 4 GB; 4 GB
64-bit: Yes; Yes
RAM type: —; LPDDR4X RAM

Resolution: 32 Mpx; 50 Mpx
Aperture: ƒ/ 1.8; ƒ/ 1.8
Flash: LED; LED
Optical stabilization: No; No
Slow motion: No, 30 fps; Yes, 120 fps
Features: Digital zoom, Triple camera, Autofocus, Touch focus, 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: 78.0 mm 171.0 mm 8.1 mm Print 3D Model; 77.0 mm 166.1 mm 8.4 mm Print 3D Model
Weight: 193 g; 209 g
Materials: Plastic; Plastic
Colors: Black White Green; Red Green
Water/dust resistance: IP54; IP64 , MIL-STD-810H
Usable surface: 87 %; 83 %

Operating system: Android 15 Android 15; 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 5.2; Bluetooth 4.2 LELow energy consumption
Bluetooth profiles: A2DP (Advanced Audio Distribution 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 , 802.11ac; 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac
Wi-Fi features: Wi-Fi Hotspot, Wi-Fi MiMO; 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, Beidou, Galileo; GPS, A-GPS, GLONASS, Beidou, QZSS

4G LTE: B1 (2100), B3 (1800), B5 (850), B7 (2600), B8 (900), B20 (800), B28b (700), 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), B5 (850), B8 (900); B1 (2100), B5 (850), B8 (900)
2G: 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)

Fingerprint: Yes, on the side; Yes, on the side
Accelerometer: Yes; Yes
Light sensor: Yes; —
Cooling system: No; Yes
Audio: DTS / DTS X, Stereo Speakers; DTS / DTS X, Hi-Res Audio, Stereo Speakers
Proximity: —; Yes