Product
Vivo iQOO U1x
Vivo iQOO U1x
Samsung Z4
Samsung Z4
Battery
Charging 18W wired -
Type 5000 mAh Li-Ion 2050 mAh, removable
Body
Build Glass front, plastic back, plastic frame -
Dimensions 164.4 x 76.3 x 8.4 mm (6.47 x 3.00 x 0.33 in) 132.9 x 69.2 x 10.3 mm (5.23 x 2.72 x 0.41 in)
SIM Nano-SIM + Nano-SIM Single SIM (Micro-SIM) or Hybrid Dual SIM (Micro-SIM, dual stand-by)
Weight 192.3 g (6.77 oz) 143 g (5.04 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX HD 4.0, A2DP, LE
NFC No No
Positioning GPS, BDS GPS, GLONASS
Radio Unspecified FM radio
USB microUSB 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Resolution 720 x 1600 pixels, 20:9 ratio (~270 ppi density) 480 x 800 pixels, 5:3 ratio (~207 ppi density)
Size 6.51 inches, 102.3 cm2 (~81.6% screen-to-body ratio) 4.5 inches, 57.6 cm2 (~62.7% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass Accelerometer, proximity
Launch
Announced 2020, October 21 2017, May. Released 2017, June
Status Available. Released 2020, October 31 Discontinued
Main Camera
Features LED flash, HDR Dual-LED flash, panorama, HDR
Single - 5 MP, f/2.2
Triple 13 MP, f/2.2, (wide), PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) -
Video 1080p@30fps 720p@30fps
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM 8GB 1GB RAM
  UFS 2.1 -
Misc
Colors Black, Blue Black, Gold
Models V2065A SM-Z400F, SM-Z400Y
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands HSDPA 850 / 900 / 2100 HSDPA 900 / 2100
4G bands 1, 3, 5, 8, 34, 38, 39, 40, 41 LTE
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  CDMA 800 & TD-SCDMA -
Platform
Chipset Qualcomm SM6115 Snapdragon 662 (11 nm) -
CPU Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Quad-core 1.5 GHz
GPU Adreno 610 -
OS Android 10, IQOO UI 1.0 Tizen 3.0
Selfie camera
Features - LED flash
Single 8 MP, f/1.8, (wide) 5 MP, f/2.2
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes