The A600 is an improvement in display size, processor speed, and battery
A600 A500s
Display 4.50-inch 4.00-inch
Processor 1.3GHz 1.2GHz
Front Cam .3megapixel .3-megapixel
Resolution 540x960 pixels 480x800 pixels
RAM 512MB 512MB
OS Android 4.2 Android 4.2
Storage 4GB 4GB
Rear Camera 5-megapixel 5-megapixel
Battery capacity 1900mAh 1400mAh