Fix problems in ITUNES please - APPLE USERS?

I'm having an iphone 4s and i want to transfer movies from my computer to iphone

when i click on sync on itunes it shows me to remove and sync and it shows it will delete all my data (if i click remove and sync will it delete all my contacts, installed apps, images, songs, videos)

i have authorized three computers with my iphone

the problem is in first computer i can add movies and songs but apps are not copied

and in other two computers i can install and copy apps but unable to transfer videos and songs

How to unlock my Iphone 4 for free?

It is an old AT&T phone and it was given to me by a good friend but I don't have the money to spend to unlock it help please

Added (1). I'm flashing it to metro pcs and yes it can be done they already ordered my sim card thanks

T mobile or Verizon? Which one do I pick based on cost / contracts / network?

I have ATT now, my contract is up, I have an old iphone 4.It works perfectly fine. However my ATT bill is unacceptable ($129 per month and it fluctuates every month a little bit, even though i have unlimited texts and messages, and never exceed my data).

I was going to get the Galaxy S4 (just cause IIm bored of iOS).

Should I switch to Verizon or T mobile?

Verizon seems to have a much better network, It will probably cost me $95 a month (cause my company gets a discount of 15% or so), but will cost me more up front (about 150$ more). I will also be locked into a contract. Worst of all I won't be able to use my phone to surf the internet while talking which I do time to time.

Tmobile is cheaper (less money down today), probably cost me 90$ every month. But the network is not as good. However there's no contract.

Please advise!

I really can't decide: Tmobile or Verizon?

I live in Central Jersey (network for both seems reasonable here).

Car Town Streets for iPad and iPhone?

In the latest update, they included an 'upgrade garage' where you can merge two cars together.
I tried it - I selected the first car from the list of all my cars, then when I tried to select the second car, no cars were listed. It said "find or buy".So I tried to find a car. I built it, then tried to merge my cars again, but it still didn't work. No cars came up in the second list.

Can someone explain it to me? How do you work this upgrade garage?

Not to be stereo typing but why are most Arabs I see So rich?

So I went to the mall today to shop and I saw an 8 year old wearing gucci and playing with an iPhone 5. I was like don't see that everyday. & I went to the Louis Vuitton store & Prads and EVERYONE WAS ARAB. I go outside and see amazing cars such as Bentleys, mercedes, bmws, and all them are Arab! I understand most of it's from oil but how? How does the government gaining from oil have to do with all these rich citizens that now have migrated here? It's crazy and I know not all Arabs are rich. I've seen places such as Palestine but I'm just wondering.

IPhone Whatsapp group chat crash?

Not sure since when when I try to enter a group chat the app crashes, other things work fine and I'm only having trouble with that specific group chat. It freezes for 2-3 sec then jumps back to the home screen.

What can I do?

IPhone or iPad Apps for building a home?

I'm looking to get an app for my iPad or iPhone that I can build a home with. I want to do the blueprints and everything. I want it to be pretty basic if possible. Is there one that gives a cost estimate as well after? Any information would be helpful.