Product
Vivo U3
Vivo U3
Samsung Galaxy J2 Pro (2016)
Samsung Galaxy J2 Pro (2016)
Battery
Charging 18W wired 5W reverse wired -
Music play - Up to 54 h
Talk time - Up to 14 h (3G)
Type 5000 mAh, non-removable Li-Ion 2600 mAh, removable
Body
Build Glass front, plastic back, plastic frame Glass front, plastic back, plastic frame
Dimensions 162.2 x 76.5 x 8.9 mm (6.39 x 3.01 x 0.35 in) 142.4 x 71.1 x 8 mm (5.61 x 2.80 x 0.31 in)
SIM Nano-SIM + Nano-SIM Dual SIM (Micro-SIM, dual stand-by)
Weight 193 g (6.81 oz) 138 g (4.87 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX 4.1, A2DP, LE
NFC No No
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS
Radio FM radio FM radio, RDS
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 1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density) 720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Size 6.53 inches, 104.7 cm2 (~84.4% screen-to-body ratio) 5.0 inches, 68.9 cm2 (~68.1% screen-to-body ratio)
Type IPS LCD Super AMOLED
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Accelerometer, proximity
Launch
Announced 2019, October. Released 2019, October 2016, July. Released 2016, July
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, HDR, panorama
Single - 8 MP, f/2.2, AF
Triple 16 MP, f/1.8, (wide), PDAF 8 MP, f/2.2, 13mm (ultrawide) 2 MP, f/2.4, (macro) -
Video 4K@30fps, 1080p@30fps 720p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (dedicated slot)
Internal 64GB 4GB RAM, 64GB 6GB RAM 16GB 2GB RAM
  UFS 2.1 -
Misc
Colors Black, Blue, Green Silver, Black, Gold
Models V1941A, V1941T SM-J210F, SM-J210G, SM-J210H, SM-J210GU
SAR - 0.78 W/kg (head)    
SAR EU - 0.59 W/kg (head)     1.24 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 4, 5, 8, 34, 38, 39, 40, 41 1, 3, 5, 8, 20, 40 - India
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 SDM675 Snapdragon 675 (11 nm) Spreadtrum SC8830
CPU Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver) Quad-core 1.5 GHz Cortex-A7
GPU Adreno 612 Mali-400MP2
OS Android 9.0 (Pie), Funtouch 9.0 Android 6.0.1 (Marshmallow)
Selfie camera
Features HDR -
Single 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm 5 MP, f/2.2
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes