Received my iPhone exactly on 14th Dec as promised by DiGi.
First impression – sleek design. Slim. Its new taller dimension need sometime for adjustment. The lightning port is cool.
One thing very obvious, its A6 chip is pretty fast! The internet is faster. The response is brisk.
From someone who was using iPhone 4, the camera image quality is impressive.
Other than that, I say it is pretty similar like my peevious iPhone 4 with iOS 6.