unblocking private incoming calls
Hello,
I have an iPhone 4. Two weeks ago I got a nasty phone call from a private number and I'm wondering if there's a way for me to find out what the number was. Even if i just had the area code of the caller it would narrow it down a lot. Are there any apps I can look into? Would ATT help me if I called?
iPhone 4, iOS 4.3.1