Poco C51 vs Vivo Y21d

At a glance

Brand: POCO; vivo
Release date: April 2023, 3 years 2 months ago; November 2025, 7 months ago
AnTuTu: 127.000 Antutu v9 Overall performance better than 53% of devices; 222.000 Antutu v10 Overall performance better than 56% of devices

Size: 6.52"; 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, Brightnes 420 cd/m² (typ), Scratch resistant, Capacitive, Multi-touch, Frameless; Hole-punch Notch, Refresh rate 90 Hz, Peak brightness - 1000 cd/m², Max brightness HBM - 1000 cd/m², TÜV Rheinland Eye Comfort Certification, DCI-P3, 83% NTSC, LED Notifications, 2.5D curved glass screen, Capacitive, Multi-touch, Frameless

Chipset: Mediatek Helio G36; Unisoc Tiger T612 / T7225
CPU: 8x Cortex A53 2.2 GHz; 2 x ARM Cortex A75 1.8Ghz + 6 x ARM Cortex A55 1.8Ghz
CPU type: Octa-Core; Octa-Core
Process: 12 nm; 12 nm
Frequency: 2.2 GHz; 1.8 GHz
GPU: IMG PowerVR GE8320 680 MHz; Mali-G57 MP1
RAM: 4 GB; 4 GB
RAM type: LPDDR4X RAM; LPDDR4X RAM
64-bit: Yes; Yes

Resolution: 8 Mpx; 50 Mpx
Aperture: ƒ/ 2.0; ƒ/ 1.8
Flash: LED; Dual LED
Optical stabilization: No; No
Slow motion: No, 30 fps; Yes, 120 fps
Features: Digital zoom, Dual camera, Autofocus, Touch focus, Manual focus, Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer; Digital zoom, Dual camera, 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, Front Flash

Dimensions: 76.8 mm 164.9 mm 9.1 mm Print 3D Model; 77.0 mm 166.1 mm 8.4 mm Print 3D Model
Weight: 192 g; 209 g
Materials: Plastic; Plastic , Splash resistant design
Colors: Black Green Cyan; Green Coral
Usable surface: 81 %; 83 %
Water/dust resistance: —; IP68, IP69

Operating system: Android 13 Tiramisu Android 13 Go Edition; 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 LELow energy consumption; Bluetooth 5.2 LELow energy consumption
Bluetooth profiles: A2DP (Advanced Audio Distribution Profile), EDR (Enhanced Data Rate), LE (Low Energy); A2DP (Advanced Audio Distribution Profile), EDR (Enhanced Data Rate), LE (Low Energy)
Wi-Fi: 802.11a , 802.11b , 802.11g , 802.11n; 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac
Wi-Fi features: Wi-Fi Hotspot, Wi-Fi Direct; Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display
USB features: Charging, OTG; Charging, OTG
Navigation: GPS, A-GPS, GLONASS, Beidou; GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo
USB: —; USB Type-C

4G LTE: B1 (2100), B3 (1800), B5 (850), B8 (900), B40 (TDD 2300), B41 (TDD 2500); 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)
3G: B1 (2100), 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)