The Official specifications of the Samsung Galaxy S3 are -
1.4GHz quad-core processor
16 / 32GB Internal storage memory
SD Card slot to expand memory to 64 GB
4.8″ Super AMOLED display
8 megapixel camera
1080p video recording at 60fps
2100 mAh battery
NFC Chip
Ice Cream Sandwich OS – 4.0.4 version
