How to enable Siri on my iPhone 4s?

I'm trying to enable it by going into general but Siri doesn't appear. I have an iPhone 4s with iOS 7.

You can get some more info here. They have various setup info.
http://www.pcmag.com/...173,00.asp

  • Why is IPhone Siri funnier than iPad Siri? I have an iPad mini. Siri is so boring on mine. She just says, "I can't answer that." Or "is that so?". On my friends iPhone, she replies really funny. Also on the Internet I see funny convos with Siri all from iPhone and not on iPad mini. Why is it that siri is funnier on iPhone? They are both part of apple!
  • How to use an iPhone 4s key to enable siri on my iPhone 4? I can't find any updated guides on how to do this. I don't want to go a free route, since I have access to an iPhone 4s. The iPhone 4s is not jailbroken, but the iPhone 4 is. I've read through the process for getting the key, and I think I can do it. Also, I have a mac. My question is, how do I actually go about setting everything up? I have Acid Siri installed currently, is it an acceptable GUI?
  • How to enable the battery percentage meter on my iPhone 5? I recently purchased this iPhone five about a week ago and I'm trying to find out how to enable the little battery percentage meter that you see on the iPhone 4S I tried checking over all the settings and I can't find it if anybody is willing to help me with this situation it would be greatly appreciated
  • How to enable smileys on IPhone? So I have an iPhone and the people I text don really have iPhones, they should get one, anyways when they send me like smileys I see the ugly. Is it possible to change it so it becomes the actual face?