Why is my iPhone playing wrong ringtone?

I have an iPhone 4 that I have recently upgraded from iOS 4.3.3 to iOS 6.0.1.
It had all my ringtones that i had downloaded still there after I upgraded, but when I picked one, if anyone called, it would stay at that default ringtone, the marimba. All my contacts and the settings are set to my ringtone, but it still plays the marimba ringtone. Can anyone help?

How to upgrade my iphone 3g to ios 4.3.1?

Specialy when most of appls and whatsapp are supported only on 4.3.1.
Kindly explain in detail along with steps and screenshots
Current version is 4.2.1

Added (1). People who think its straight update its not(please gimme a break). IPhone 3g only can be updated till ios 4.2.1. I would like to know any out of the box ways to do it (Jailbreak or watever)

Iphone Jailbreak and 2 Year Contract?

If I buy and Iphone 4 with the 2 year contract, Jailbreak it, and take it to another country to use it there, what happens to my AT&T contract here? Do I have to continue making any monthly payments even if it that sim isn't used at all since the phone itself is in use with another service provider in another country?

How to add things to your iCloud storage?

So I have the iPhone 4, I try to save my battery by not having a lot of apps and not take up so much memory. But, I take a lot of pictures, I have a lot of music, and I have a lot of contacts. It takes up a lot of space. So how do I add apps to iCloud? If I do put apps on iCloud, will I still be able to use them regularly? I was going to put the stuff that takes up the most storage, photos and music. So would I be able to use it all the time? And would it take up less storage on my actual phone?

Help lease! How do i get iOS update

My iphone 3gs is jailbroken and i don't know if its ok to update it or not. I don't want my things to be deleted and i don't want the update to harm my phone cuz of the jailbreak. I suck at itunes and these things: S please help me, what should i do and how.

Pre-paid iPhone 5 vs Contract version?

I signed a 2 year contract with Verizon, last year, and they all of a sudden want to charge $750 dollars for the last bill. -I have the iPhone 4 right now.

I'm fed up with the contract thing I'm paying $115 dollars monthly.

So if I switched to pre-paid and purchased the iPhone 5, what are the differences gonna be?

Like there will still be iTunes & stuff like that, right? I don't know how different everything will be. The service will probably terrible, won't it?

Should I go pre-paid with the iPhone 5 or should I go to AT&T?

Should every iPhone have its own iTunes account?

I just got an iPhone 4S for Christmas, and my brother had an iPhone 4. My entire family uses the same iTunes account, and it's never been a problem before now. My laptop keeps confusing my iPhone with my brothers, and it won't let me download anything from my computer to my phone because it says it hasn't had iTunes updated, which it has. Yesterday, by brother was getting my text messages on iMessage, and I got really confused because his iPhone isn't activated anymore, he got a new phone and just uses the iPhone has an iPod. Is all this happening because we don't have separate iTunes accounts, or is there another reason?