IPhone app to control windows?

I was watching my teacher control his PC with his iphone. He won't tell me what app it is! He had a full screen view of his pc on his iPhone! So his iphone was a second monitor essentially and he could also control the iphone as well! Please can someone tell me what app this is!

My new iphone 5 won't sync to itunes?

Hey so i got my new iphone 5 today and i pluged it into my computer but it comes up with a window say that it can't sync my phone because it is locked with a passcode and i must enter the passcode on my iphone before it can be used with itunes.
what does this mean?
how do i know the passcode?
where do i eter this passcode?

please help me i would really appreciate it i'm not so good with technology and stressing a little abou this

Can I use my Iphone with any carrier after a jailbreak?

Originally i bought my iphone from a guy said it was jailbroken. I activated the phone to At&T. The phone was messing up after awhile so i downloaded IOS 6.0.1. Surprisingly my service still worked. It seems like its not jailbroken anymore? I want to activate on a Verizon line but i don't know if I have to jail break it again?

Help iphone 4 stuck on apple logo

Okay so i JUST got this iphone i jailbroke it on ios 6 but then me as dumb as i'm i click erase all on my iphone and now it won't boot up what can i do please help.thanks.

Added (1). GUYS ITS FIXED I HAD IOS 6 BACKED UP TO MY COMPUTER So I JUST BOOTED IT WITH REDSNOW NOW I'm NOT TOUCHING MY IPHONE ANYMORE

How to play minecraft offline?

I don't have Internet on my computer so I can't play it online, I can download files to my iPhone so that it not a problem if I need to download.

2gb or 4gb data plan on verizon?

I'm switching from t-mobie to verizon (instead of At&t) and getting the iphone 5.currently on t mobile i have unlimited data and my usage varys monthly. I used to use 2gb sometimes, now around 300mb. I tend not to use data as much anymore because t mobiles 4g has been painfully slow lately. Also doesn't LTE eat up more data? (rumor i heard)

I can can get an active military discount on verizon so it will be $85 for 2gb and $93.5 for 4gb. Which should i get?

Dropped iphone in toliet

So my iphone died and 5 mins after i accidently knocked it in the toliet and took it out immediately, it was only in water for under 3 seconds, so far i've blow dried it and now its sitting in rice, its only been 15 mins since its happened so i don't wana try and put it on the charger yet, anyone else do this and did something that fixed it? Please help i don't have a warranty and i really don't wanna lose all my pictures and contacts.

How much does a 16gb iPhone 5 cost with tax in CA?

I'm from San Francisco, CA. I want to upgrade to an iPhone 5 16gb (for AT&T). I know its retail price is $199, but how much is it after tax and all the other fees? I want to pay in cash so I want to make sure I have enough.