I can't connect to App Store after iOS 7 upgrade few weeks?

I'm having issue on my iPhone 5.iOS 7.03
I have tried everything as ppl mentioned.
Check the time and date, and I also tried to sign in from App Store and from setting as well.
But it won't work for me!
Can someone please help me out.

Added (1). Can't connect iTunes Store

What error comes up?

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