Product
Vivo iQOO U1x
Vivo iQOO U1x
Google Pixel 4a
Google Pixel 4a
Battery
Charging 18W wired 18W wired, PD2.0
Type 5000 mAh Li-Po 3140 mAh
Body
Build Glass front, plastic back, plastic frame Glass front (Gorilla Glass 3), plastic back, plastic frame
Dimensions 164.4 x 76.3 x 8.4 mm (6.47 x 3.00 x 0.33 in) 144 x 69.4 x 8.2 mm (5.67 x 2.73 x 0.32 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + eSIM
Weight 192.3 g (6.77 oz) 143 g (5.04 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX HD 5.0, A2DP, LE, aptX HD
NFC No Yes
Positioning GPS, BDS GPS, GLONASS, GALILEO, QZSS, BDS
Radio Unspecified No
USB microUSB 2.0, OTG USB Type-C 3.1
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, DLNA
Display
Protection - Corning Gorilla Glass 3
Resolution 720 x 1600 pixels, 20:9 ratio (~270 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~443 ppi density)
Size 6.51 inches, 102.3 cm2 (~81.6% screen-to-body ratio) 5.81 inches, 83.2 cm2 (~83.3% screen-to-body ratio)
Type IPS LCD OLED, HDR
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2020, October 21 2020, August 03
Status Available. Released 2020, October 31 Available. Released 2020, August 20
Main Camera
Features LED flash, HDR LED flash, Pixel Shift, Auto-HDR, panorama
Single - 12.2 MP, f/1.7, 27mm (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; gyro-EIS
Memory
Card slot No No
Internal 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM 128GB 6GB RAM
  UFS 2.1 UFS 2.1
Misc
Colors Black, Blue Just Black, Barely Blue
Models V2065A G025J, GA02099, G025N
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, 14, 17, 18, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 66, 71
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (3CA) Cat12 600/75 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  CDMA 800 & TD-SCDMA -
Platform
Chipset Qualcomm SM6115 Snapdragon 662 (11 nm) Qualcomm SDM730 Snapdragon 730G (8 nm)
CPU Octa-core (4x2.0 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 610 Adreno 618
OS Android 10, IQOO UI 1.0 Android 10, upgradable to Android 13
Selfie camera
Features - HDR
Single 8 MP, f/1.8, (wide) 8 MP, f/2.0, 24mm (wide), 1.12µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes, with stereo speakers
Tests
Battery (old) - Endurance rating 76h
Display - 803 nits max brightness (measured)
Performance - AnTuTu: 268714 (v8)GeekBench: 6426 (v4.4), 1626 (v5.1)GFXBench: 17fps (ES 3.1 onscreen)