I had siri now its gone! IPhone 5

I got my iPhone 5 yesterday, and it was great, it had siri the works but then today i reset my phone ( on purpose) to get rid of photos and now sirs gone! How can i get it back! Please need help!

Settings, General, Siri, turn on. If that doesn't work then take your iPhone to Apple

Settings>General>Siri>Turn Siri on.