Vivo iQOO Z9x vs Vivo Y21d

At a glance

Brand: vivo; vivo
Release date: April 2024, 2 years 1 months ago; November 2025, 6 months ago
AnTuTu: 515.000 Antutu v10 Overall performance better than 73% of devices; 222.000 Antutu v10 Overall performance better than 56% of devices

Size: 6.72"; 6.68"
Resolution: 1200 x 2809 px QHD; 720 x 1608 px HD+
Type: LCD IPS; LCD IPS
Density: 455 ppi Very high density; 264 ppi Medium Density
Aspect ratio: 20:9; 20:9
Features: Hole-punch Notch, 3840 Hz PWM, Refresh rate 120 Hz, Touch sampling rate 300 Hz, Peak brightness - 1000 cd/m², Peak brightness - 4500 cd/m², 1400:1 contrast ratio, TÜV Rheinland Eye Comfort Certification, HDR10+, DCI-P3, DC dimming, 105% NTSC, Scratch resistant, 3D curved glass screen, 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: Qualcomm Snapdragon 6 Gen1; Unisoc Tiger T612 / T7225
CPU: 4x2.2GHz Cortex A78 + 4x1.80GHz Cortex A55; 2 x ARM Cortex A75 1.8Ghz + 6 x ARM Cortex A55 1.8Ghz
CPU type: Octa-Core; Octa-Core
Process: 4 nm; 12 nm
Frequency: 2.2 GHz; 1.8 GHz
GPU: Adreno 710; Mali-G57 MP1
RAM: 8 GB; 4 GB
RAM type: LPDDR4X RAM; LPDDR4X RAM
64-bit: Yes; Yes

Resolution: 50 Mpx; 50 Mpx
Aperture: ƒ/ 1.8; ƒ/ 1.8
Sensor: Samsung S5KJN1; —
Pixel size: 0.64 µm; —
Sensor size: 1/2.76"; —
Flash: Dual LED; Dual LED
Optical stabilization: No; No
Slow motion: Yes, 240 fps; Yes, 120 fps
Features: 4K Video, Digital zoom, Dual camera, Digital image stabilization, Autofocus, Touch focus, Manual focus, Phase detection autofocus (PDAF), Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, RAW, Night Mode; 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: 76.0 mm 165.7 mm 8.0 mm Print 3D Model; 77.0 mm 166.1 mm 8.4 mm Print 3D Model
Weight: 199 g; 209 g
Materials: Plastic; Plastic , Splash resistant design
Colors: Black Green; Green Coral
Water/dust resistance: IP64; IP68, IP69
Usable surface: 83 %; 83 %

Operating system: Android 14 Upside-down cake Funtouch OS 14 (Android 14); Android 15 Funtouch OS 15 (Android 15)
Updates: OS updates: 3 years, Security updates: 4 years; —
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 5.1; Bluetooth 5.2 LELow energy consumption
Bluetooth profiles: A2DP (Advanced Audio Distribution Profile), APT-x, LDAC, SBC, AAC; A2DP (Advanced Audio Distribution Profile), EDR (Enhanced Data Rate), LE (Low Energy)
Wi-Fi: 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac, WiFi 6 (802.11ax); 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac
Wi-Fi features: Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, 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, QZSS, Galileo; GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo

5G: n1 (2100), n8 (900), n28b (700), n28a (700), n38 (2600), n40 (2300), n41 (2500), n77 (3700), n78 (3500); —
4G LTE: B1 (2100), B3 (1800), B5 (850), B7 (2600), B8 (900), B20 (800), B28b (700), B28a (700), B34 (TDD 2100), B38 (TDD 2600), 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: B3 (1800), B5 (850), B8 (900); B3 (1800), B5 (850), B8 (900)