My iPhone won't send or receive any text messages?

My iPhone 4 can't receive or send any texts/iMessages. When I try to send a message it doesn't show the little red 'error' circle or anything, the text will appear and it will say sending and as it's finished loading it'll just disappear. No one receives my texts and I don't get theirs. What should I do?

How to sync my iPhone to my computer if my usb ports are broken?

So I just got an iPhone, and it's all working and stuff and I can use the app store and everything, but I can't get any of my music from iTunes on to it because I can't plug it into my computer because my dad is not so good at stuff and broke both of my usb ports trying to plug a mouse into my laptop one time… Is there anyway to make my iPhone sync over iCloud without plugging it into the computer? Could I sign into my iTunes on another computer and plug my phone in then pick that setting then would it work on my other computer too? Or how do I do that, is it even possible?

Cost of an iphone 4s plan with AT&T?

I really want the iphone 4s, and I have Att. I've never owned a smartphone.

How much would it cost per month if I had an iphone 4s contract? I need to upgrade soon anyways, so would I get a discount for upgrading/ contract?

Ok, so here it is broken down:

*Cost of the iphone 4s with upgrades/ contract/ etc.
*Activation fee
*As much Data as I can get with a plan, or the rate at which it's calculated
*Unlimited texting
*little to no calling

Initial cost:
Monthly cost

WIll and unlocked Sprint iPhone 5 work with AT&T network?

I have literally been researching this question for the past two weeks and have not found one solid answer. I visited the sprint support blog and got many mixed answers. The sprint employees were saying that no they only unlock it for international use. But customers were telling me that yes they had gotten the sprint iphone 5 unlocked with them and it could work on AT&T 4G network but not LTE. Does anyone know the real definite answer? I would get the iPhone 5 unlocked with sprint, and then use it on AT&T? Would it work if it is 100% unlocked by them, or will it really only work overseas?

Unknown iPhone passcode set by unknown person?

A passcode has been set on my iPhone without me knowing, now it is locked up. It says here to connect it to my computer and back up then restore my iPhone. Will this clear everything off my phone or will it be the same as it was before it got locked? I have only attempted unlocking it about 5 times in fear of disabling it. I do not want to back up then restore it if it will clear everything off and transfer it to the computer. Are there any alternatives to unlocking my iPhone?

I need to look at my Iphone messeges

Some being an idiot dropped my phone and now the screen does not work but it can still receive messages because i can hear it vibrate, and i can answer phone calls. I have a big problem thou i recently talked to an ex boyfriend and our conversations can be inappropriate but its just a joke and i don't want my parents to see the messages. Is there any way that i can delete texts from my computer on my phone?