Product
Vivo X21 UD
Vivo X21 UD
Vivo X50 5G
Vivo X50 5G
Battery
Charging 18W wired 33W wired
Type Li-Ion 3200 mAh, non-removable 4200 mAh
Body
Build Glass front (Gorilla Glass 3), aluminum back, aluminum frame Glass front, glass back, aluminum frame
Dimensions 154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) 159.5 x 75.4 x 7.6 mm (6.28 x 2.97 x 0.30 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 156.2 g (5.50 oz) 174.5 g (6.17 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.1, A2DP, LE, aptX HD
NFC No Yes
Positioning GPS, GLONASS GPS, GLONASS, GALILEO, BDS
Radio FM radio No
USB microUSB 2.0, OTG USB Type-C, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 3 -
Resolution 1080 x 2280 pixels, 19:9 ratio (~402 ppi density) 1080 x 2376 pixels (~398 ppi density)
Size 6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) 6.56 inches, 104.6 cm2 (~87.0% screen-to-body ratio)
Type Super AMOLED AMOLED, 90Hz, HDR10+
Features
Sensors Fingerprint (under display, optical), accelerometer, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, compass
  - Virtual proximity sensing
Launch
Announced 2018, March. Released 2018, March 2020, June 01
Status Discontinued Available. Released 2020, June 06
Main Camera
Dual 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF 5 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama
Quad - 48 MP, f/1.6, (wide), PDAF, OIS 13 MP, f/2.5, 50mm (telephoto), 1/2.8", 0.8µm, PDAF, 2x optical zoom 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.5, (macro)
Video 1080p@30fps 4K@30fps, 1080p@30fps, gyro-EIS
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 128GB 6GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  eMMC 5.1 UFS 2.1
Misc
Colors Black, Ruby Red Glaze Black, Frost Blue, Pink
Models X21UD A V2001A, 2005
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International
4G bands 1, 2, 3, 5, 8, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 28, 34, 38, 39, 40, 41 - International
5G bands - 1, 3, 28, 41, 77, 78, 79 SA/NSA - International
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps HSPA, LTE, 5G
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / LTE / 5G
  CDMA 800 & TD-SCDMA 1, 3, 41, 77, 78, 79 SA/NSA - China
Platform
Chipset Qualcomm SDM660 Snapdragon 660 (14 nm) Qualcomm SM7250 Snapdragon 765G 5G (7 nm)
CPU Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)
GPU Adreno 512 Adreno 620
OS Android 8.1 (Oreo), Funtouch 4 Android 10, Funtouch 10.5
Selfie camera
Features - HDR
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes
  32-bit/192kHz Hi-Res audio 24-bit/192kHz Hi-Res audio