Where can i find siri on my ihpone 5s?

I just bought iphone 5s, and i didn't find siri app. Does it come originally with it, or should i install it?

i looked for it on app store and i couldnt find it, can someone please tell me how can i install it

Why do people believe Apple is the best Tech company?

I mean seriously. Compared to other phones, like the galaxy s4, the HTC one, the iPhone is pathetic. They never innovate, its pretty much the same iPhone every year, the galaxy s3 is better than the iPhone 5s, and the galaxy s5 is nearly coming out. Any OPINIONS would be appreciated.

How to tell if my dead iPhone 5 is charging?

Yes, I've tried googling this and a lot of responses came up. However, none of the situations where the exact same as mine nor did it answer my question.

I've always had trouble with chargers stop working after a couple of weeks, but I just figured it was because a lot of them weren't Apple-made. However, in the past two weeks, every two days I've been needing a new charger. I've probably been through around 10 in a couple of days and some of those were Apple, so I don't think that's the problem.

My first question is that I'm re-going through a lot of these "dead" chargers and trying them with different wall plug-ins and different outlets around the house. How do I know if its working? So far its been doing the red bar with the cord and arrow below it for all of them and I wasn't sure if that meant it was charging, so I've been leaving it for around 20 minutes, still no turn on.

Secondly: Why might my iPhone be doing this? It's recently been causing a lot of problems so I'm about ready to trade it in for a new one. First, though I want to get back on my phone one more time to make sure everything I need is backed up.

IPhone has forgotten hotmail and App Store passwords

Went to download something on the App Store. Typed in my password correctly 3 times but it's rejecting it. Also tried to refresh my hotmail account on my iPhone and that too is saying the password is incorrect. Does anyone know what the problem could be? Passwords that I entered are definitely correct

Can you signup for fastpass+ on the iphone app?

Will you be able to use the Disney app to sign up for fastpass+ times?

Added (1). I also think this may help the overall experience. The old fastpass system had some abuses that I think ended up making the lines longer for everyone. In particular, back when they did not enforce the end times on the passes, people would be j@rks and save them up for the afternoon and them use them all. I have high hopes for the new system.

Can you just switch SIM from iPhone 4s to the iPhone 5?

So, my friend is offering to sell me an iPhone 5.
I currently have the iPhone 4S.

I understand that both of the SIMS are different, and I will go to the store to get my SIM Card cut to the nano requirements for the 5.

My questions are though,

Do I have to get another plan or something?
Do I have to pay extra? Or will this work just fine and can I use the phone normally as I have been using the 4S, assuming that the SIM card is perfectly cut?

I don't know if this helps, but I use AT&T.

IPhone 5 battery keeps dying.why?

I have an iPhone 5 and it's great but when it gets to about 50/60% it suddenly either drop to below 10% and turn off or it will die immediately. I don't know what's wrong with it but it can get quite frustrating especially when I'm out. Please help me I don't know what's wrong or how to fix it:/ any ideas?