Product
Vivo X20
Vivo X20
Vivo X50
Vivo X50
Battery
Charging - 33W wired
Type Li-Ion 3250 mAh, non-removable 4200 mAh
Body
Build Glass front, aluminum back, aluminum frame Glass front, glass back, aluminum frame
Dimensions 155.9 x 75.2 x 7.2 mm (6.14 x 2.96 x 0.28 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 159 g (5.61 oz) 173 g (6.10 oz)
Comms
Bluetooth 5.0, A2DP, LE 5.1, A2DP, LE, aptX HD
NFC No Yes
Positioning GPS GPS, GLONASS, GALILEO, BDS
Radio No 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
Resolution 1080 x 2160 pixels, 18:9 ratio (~402 ppi density) 1080 x 2376 pixels (~398 ppi density)
Size 6.01 inches, 93.2 cm2 (~79.5% 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 (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, compass
  - Virtual proximity sensing
Launch
Announced 2017, September. Released 2017, October 2020, July 07
Status Discontinued Available. Released 2020, July 16
Main Camera
Dual 12 MP, f/1.8, AF 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 64GB 4GB RAM 128GB 8GB RAM, 256GB 8GB RAM
  eMMC 5.1 UFS 2.1
Misc
Colors Matte Black, Black/Gold, Gold, Rose gold, Blue, Pink Glaze Black, Frost Blue
Models X20A, 1721 2004
Network
2G bands GSM 900 / 1800 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 900 / 2100
4G bands 1, 2, 3, 5, 7, 8, 34, 38, 39, 40, 41 1, 3, 5, 8, 40
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps HSPA, LTE
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  1, 2, 3, 4, 5, 8, - X20A -
Platform
Chipset Qualcomm SDM660 Snapdragon 660 (14 nm) Qualcomm SDM730 Snapdragon 730 (8 nm)
CPU Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
GPU Adreno 512 Adreno 618
OS Android 7.1.1 (Nougat), upgradable to Android 8.0 (Oreo), Funtouch 3.2 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
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes
  32-bit/192kHz audio 24-bit/192kHz Hi-Res audio