I lost my iPhone 4s at a party

I was at a party last night and woke up this morning to find it missing its definitely not in my house so someone has stolen it. I didn't have a tracker app on it and so can someone please tell me what I can do As soon as possible? Can you download an app into another device to find my iPhone? Or did I have to download that on my iPhone before I lost it?

Just call the cops man they'll get it to you

Call your provider and deactivate it just in case. Then, ask people at the party if they've seen it. If your phone does not show up soon, buy another phone.

IT isn't an app, it's a setting you have to activate. Then you can go on any computer and go to icloud and "find my phone". I use it to spy on my kids. They have no idea. If the setting isn't activated on your phone, you are out of luck. You can, however, have apple or ATT (I'm not sure which) deactivate the phone, so whoever stole it won't be able to use it.

Hopefully you had insurance otherwise you're SOL. I had an ipod touch 4 and the coolest thing about it was that app that I could track the device with it's gps (yes, it does have gps) and even lock it or brick it altogether.

You can go to icloud.com and sign in with your apple ID and password. Then go to 'Find my iPhone'. As long has you had location services set to 'on' on your phone and it's not dead yet then you should be able to track it. You can also wipe the whole memory and/or set a special password from icloud so no one can get your information or even on the phone. It's very handy indeed.

You should've downloaded it before.there's nothing you can do unless you know who took them and contact the police.