Is Siri available on the iPhone 3GS?

I have the iPhone 3GS and I'd like to know if Siri is available on my device. There are a few apps available on the app store, but I'm not sure if they will work.
also, could you give me a brief description on what Siri does?

Do you still need to pay bills for a stolen iPhone?

I called to have it disconnected because someone stole it but it was also stolen the day I got the phone and signed the contract. Do I still need to pay the monthly bill? It's with Verizon? I can't afford to get another phone because I used my money to buy this iPhone.

Deleted video off iPhone! How to get it back?

Eeeeeeep!

I was watching a video I recorded on my iPhone and I accidentally deleted it!

It had just been made that day (at Disneyland!) and so it wasn't backed up to iTunes or iCloud. Damn!

Please tell me there's some magic trick to get it back… Please?

Will iPhone 5 (unlocked) purchased from US, work in India?

I'm planning to purchase iPhone 5 (Verizon unlocked) 16GB from US to use it in India. I will be using the 3G service available here. Will the phone work with other GSM carriers available here provided it's a nano-sim? My friends are saying that they purchased iPhone 4 unlocked from US, it didn't work in India.

Can i download music from ps3 to iphones?

I download music on to my ps3 and download it to my mp3 but I just got an iphone and I was wondering if I could plug in the iphone to the ps3 and download music from ps3 to my iphone like I do with my mp3.

Why should someone switch from iphone 4s to a 5?

The new processor is only 1 to 2 seconds faster max, so no you can't say the processor.
The long display isn't necessary. The width is still the same, so no the display is not worth it.
And who really cares if it is light. The 4S isn't even that heavy.

So other than these reasons, why would someone buy a 5 when the 4S is basically giving the same results.

How long will it take me to get my iphone 5?

I ordered my iphone 5 yesterday from at&t and i did the while confirmation email hing today. When do you think il actually receive my iphone 5? Ik they say 14-21 business days but i was wondering what it actually was. This is for at&t

How to transfer photos from my canon to my iPhone4s?

I just got a canon yesterday and i was just wondering how i can transfer the photos from my canon onto my iPhone. I tried saving them to my computer then sending them to myself through facebook message, but it turned out bad quality. Is there another way? Please Explain.