Product
Vivo iQOO U1x
Vivo iQOO U1x
Google Pixel 3a
Google Pixel 3a
Battery
Charging 18W wired 18W wired, PD2.0
Type 5000 mAh Li-Po 3000 mAh, non-removable
Body
Build Glass front, plastic back, plastic frame Glass front (Asahi Dragontrail), plastic back, plastic frame
Dimensions 164.4 x 76.3 x 8.4 mm (6.47 x 3.00 x 0.33 in) 151.3 x 70.1 x 8.2 mm (5.96 x 2.76 x 0.32 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + eSIM
Weight 192.3 g (6.77 oz) 147 g (5.19 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX HD 5.0, A2DP, LE, aptX HD
NFC No Yes
Positioning GPS, BDS GPS, GLONASS, GALILEO
Radio Unspecified No
USB microUSB 2.0, OTG USB Type-C 2.0
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 - Asahi Dragontrail Glass
Resolution 720 x 1600 pixels, 20:9 ratio (~270 ppi density) 1080 x 2220 pixels, 18.5:9 ratio (~441 ppi density)
Size 6.51 inches, 102.3 cm2 (~81.6% screen-to-body ratio) 5.6 inches, 79.6 cm2 (~75.0% screen-to-body ratio)
Type IPS LCD OLED
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2020, October 21 2019, May 07
Status Available. Released 2020, October 31 Available. Released 2019, May 15
Main Camera
Features LED flash, HDR Dual-LED flash, Pixel Shift, HDR, panorama
Single - 12.2 MP, f/1.8, 28mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS
Triple 13 MP, f/2.2, (wide), PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) -
Video 1080p@30fps 4K@30fps, 1080p@30/60/120fps
Memory
Card slot No No
Internal 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM 64GB 4GB RAM
  UFS 2.1 eMMC 5.1
Misc
Colors Black, Blue Just Black, Clearly White, Purple-ish
Models V2065A G020A, G020E, G020B, G020G, G020H
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 3, 5, 8, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 32, 38, 40, 41, 66, 71
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (3CA) Cat11 600/75 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 & TD-SCDMA CDMA2000 1xEV-DO
Platform
Chipset Qualcomm SM6115 Snapdragon 662 (11 nm) Qualcomm SDM670 Snapdragon 670 (10 nm)
CPU Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (2x2.0 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver)
GPU Adreno 610 Adreno 615
OS Android 10, IQOO UI 1.0 Android 9.0 (Pie), upgradable to Android 12
Selfie camera
Features - HDR
Single 8 MP, f/1.8, (wide) 8 MP, f/2.0, 24mm (wide), 1/4.0", 1.12µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes, with stereo speakers