How to delete contacts on iOS 6.1.2 iPhone 5?

I just bought an iPhone 5 a week ago and I'm already having problems. It won't let me delete contacts and I'm getting frustrated because before the update it would give me the edit option. It automatically updated and I don't know how to revert it without a master reset, which I don't wanna do because I already loaded all my contacts.

Where can I find the best iPhone 4 wallet case?

I'm looking for a wallet case that can hold my ID, my debit card, and maybe a little bit of cash. I would like the ID to have a clear slot so I don't have to take it out constantly. I have looked on Amazon and they all seem to be the same exact thing just in multiple different colors. Also purchased one from them and it had a horrendous smell that didn't seem to go away. What are some good website that have cute, fashionable iPhone 4 wallet cases for a reasonable price?

Straight Talk for AT&T iPhone 3GS?

I got the AT&T compatible straight talk SIM card. The calling/texting is working. However, I can't change the APN settings. There's no "Network" tab. I want to do this without jailbreaking if possible.