Highlights
4G/LTE
A37 Grey : 
A37 Gold : 
Internal Memory
A37 Grey : 16 GB
A37 Gold : 16 GB
Rear Camera
A37 Grey : 8 MP
A37 Gold : 8 MP
Battery
A37 Grey : 2630 mAh non-removable
A37 Gold : 2630 mAh non-removable
Resolution
A37 Grey : HD IPS display (1280 x 720) PX
A37 Gold : HD IPS display (1280 x 720) PX
RAM
A37 Grey : 2 GB
A37 Gold : 2 GB
Front Camera
A37 Grey : 5 MP
A37 Gold : 5 MP
Screen Size
A37 Grey : 5 "
A37 Gold : 5 "
A37 Grey : ColorOS 3.0, based on Android 5.1
A37 Gold : ColorOS 3.0, based on Android 5.1
ColorOS 3.0, based on Android 5.1: ColorOS 3.0, based on Android 5.1 is a special OS created by OPPO electronics. This OS is 25 % faster than previous operating systems, as a result of various optimazation features that are added to improve the efficinecy of the device. It has a unique feature of data saving that saves both battery & data by freezing background apps. It also gives 40% longer battery life by reducing battery consumption as it automatically kills apps which abnomally consume power when the screen is off.
Color
A37 Grey : Grey
A37 Gold : Gold
Expandable Memory
A37 Grey : 128 GB
A37 Gold : 128 GB
A37 Grey : Nano-SIM
A37 Gold : Nano-SIM
iPhone 6s is not compatible with existing micro-SIM cards.
No of SIM
A37 Grey : Dual SIM
A37 Gold : Dual SIM
Design
Display
A37 Grey : 5 inch, IPS TFT HD touchscreen with Multi-touch, capacitive Screen, gorilla glass 4 support for gloved and wet touch input
A37 Gold : 5 inch IPS TFT HD touchscreen with Multi-touch, capacitive Screen, gorilla glass 4 support for gloved and wet touch input
Dual sim standby
A37 Grey : 
A37 Gold : 
Technical Details
GPU
A37 Grey : Adreno A306
A37 Gold : Adreno A306
CPU Type
A37 Grey : QuadCore
A37 Gold : QuadCore
Processor
A37 Grey : 1.2GHz MSM 8916 Quad-core 64-bit processor
A37 Gold : 1.2GHz MSM 8916 Quad-core 64-bit processor
Sensors
A37 Grey : Accelerometer, Distance sensor, E-Compass, Gravitation, Light Sensor, Touch ID fingerprint sensor
A37 Gold : Accelerometer, Distance sensor, E-Compass, Gravitation, Light Sensor, Touch ID fingerprint sensor
Connectivity
Wi‑Fi
A37 Grey : 2.4/5GHz 802.11 a/b/g/n
A37 Gold : 2.4/5GHz 802.11 a/b/g/n
Bluetooth
A37 Grey : 4.0
A37 Gold : 4.0
Assisted GPS and GLONASS
A37 Grey : 
A37 Gold : 
USB
A37 Grey : 
A37 Gold : 
Memory
External Memory Support
A37 Grey : MicroSD
A37 Gold : MicroSD
Power and Battery
Charging via USB to computer system or power adapt
A37 Grey : 
A37 Gold : 
Camera
A37 Grey : Auto HDR for photos, Double exposure, GIF animation, LED Flash, Palm shutter, Panorama (up to 63 megapixels), Real time beautification, Selfie panorama, Time lapse, Voice shot
A37 Gold : Auto HDR for photos, Double exposure, GIF animation, LED Flash, Palm shutter, Panorama (up to 63 megapixels), Real time beautification, Selfie panorama, Time lapse, Voice shot
Double exposure: This features allows you to take two different shots & then mix (overlap) them, to get one final image, resulting in a unique and fun photographic effect
Palm shutter: In this feature you have to just open your plam towards the camera to take selfies.
Voice shot: It is special feature wherein you have to just say "cheese" to take selfies.
Modes
A37 Grey : Night mode, Selfie mode
A37 Gold : Night mode, Selfie mode
Back Camera Features
A37 Grey : PureView
A37 Gold : PureView
Front camera features
A37 Grey : Still image capture, Video call, Video recording
A37 Gold : Still image capture, Video call, Video recording
Aperture
A37 Grey : ƒ/2.2 aperture, f/2.4
A37 Gold : ƒ/2.2 aperture, f/2.4
Auto HDR for photos
A37 Grey : 
A37 Gold : 
Zoom
A37 Grey : 8x zoom
A37 Gold : 8x zoom
Weight and Dimensions
Width
A37 Grey : 71 mm
A37 Gold : 71 mm
Depth
A37 Grey : 7.68 mm
A37 Gold : 7.68 mm
Height
A37 Grey : 143.1 mm
A37 Gold : 143.1 mm
Weight
A37 Grey : 136 Gm
A37 Gold : 136 Gm
Accessories
In-ear type earphones
A37 Grey : 
A37 Gold : 
Case
A37 Grey : 
A37 Gold : 
Charger
A37 Grey : 
A37 Gold : 
USB Cable
A37 Grey : 
A37 Gold : 
Screen protector (pre-applied)
A37 Grey : 
A37 Gold : 
Quick Start Guide and Warranty Card
A37 Grey : 
A37 Gold : 
SIM tray ejector
A37 Grey : 
A37 Gold :