Product
Xiaomi Redmi 3 Pro
Xiaomi Redmi 3 Pro
Samsung Galaxy J2 Pro (2016)
Samsung Galaxy J2 Pro (2016)
Battery
Charging 10W wired -
Music play - Up to 54 h
Talk time - Up to 14 h (3G)
Type Li-Ion 4100 mAh, non-removable Li-Ion 2600 mAh, removable
Body
Build Glass front, aluminum back, aluminum frame Glass front, plastic back, plastic frame
Dimensions 139.3 x 69.6 x 8.5 mm (5.48 x 2.74 x 0.33 in) 142.4 x 71.1 x 8 mm (5.61 x 2.80 x 0.31 in)
SIM Nano-SIM + Micro-SIM Dual SIM (Micro-SIM, dual stand-by)
Weight 144 g (5.08 oz) 138 g (4.87 oz)
Comms
Bluetooth 4.1, A2DP 4.1, A2DP, LE
Infrared port Yes -
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS
Radio FM radio FM radio, RDS
USB microUSB 2.0 microUSB 2.0, OTG
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Resolution 720 x 1280 pixels, 16:9 ratio (~294 ppi density) 720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Size 5.0 inches, 68.9 cm2 (~71.1% 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 2016, March. Released 2016, April 2016, July. Released 2016, July
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, HDR, panorama
Single 13 MP, f/2.0, PDAF 8 MP, f/2.2, AF
Video 1080p@30fps 720p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (dedicated slot)
Internal 32GB 3GB RAM 16GB 2GB RAM
  eMMC 4.5 -
Misc
Colors Dark Gray, Silver, Gold Silver, Black, Gold
Models - SM-J210F, SM-J210G, SM-J210H, SM-J210GU
SAR - 0.78 W/kg (head)    
SAR EU 1.33 W/kg (head)     0.59 W/kg (head)     1.24 W/kg (body)    
Network
2G bands GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 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, 7, 38, 39, 40, 41 1, 3, 5, 8, 20, 40 - India
Speed HSPA, LTE, EV-DO Rev.A 3.1 Mbps HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / CDMA / HSPA / EVDO / LTE GSM / HSPA / LTE
  CDMA2000 1xEV-DO -
Our Tests
Audio quality Noise -90.6dB / Crosstalk -92.3dB -
Battery (old) Endurance rating 104h -
Camera Photo / Video -
Display Contrast ratio: 1145:1 (nominal), 2.803 (sunlight) -
Loudspeaker Voice 67dB / Noise 70dB / Ring 74dB -
Performance Basemark OS II 2.0: 5427Basemark X: 262 -
Platform
Chipset Qualcomm MSM8939v2 Snapdragon 616 (28 nm) Spreadtrum SC8830
CPU Octa-core (4x1.5 GHz Cortex-A53 & 4x1.2 GHz Cortex-A53) Quad-core 1.5 GHz Cortex-A7
GPU Adreno 405 Mali-400MP2
OS Android 5.1 (Lollipop), MIUI 7.3 Android 6.0.1 (Marshmallow)
Selfie camera
Single 5 MP, f/2.2 5 MP, f/2.2
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes