Samsung

• 8-megapixel rear camera with flash
• 5-inch 720p OLED screen
• Android 5.0.1 with TouchWiz
• 8GB storage
• Spreadtrum SC8830 quad-core CPU
• 1.5GB RAM

CPU: 1.5GHz quad-core

RAM: 1.5GB

ROM: 16GB Internal storage

Camera: 13MP Back Camera

OS:  5.1 Android Version

CPU: 1.3GHz dual-core

RAM: 512MB RAM

ROM: 4GB

CAMERA: 5MP

OS: 4.4

CPU: 1.6GHz octa-core

RAM: 3GB

ROM: 16GB of Internal Storage

OS: 5.1 Android Version

Camera: 13MP Back Camera.