Is imessage free when you re using Wi-Fi?

I DON't HAVE INTERNET ON MY PHONE lol i just wanted to make that clear. I only have Access to internet when i'm at home and have Wi-Fi. Will i be charged anything if i text another iphone 4s or 4 user?

Facebook Chat on Iphone with little moon?

The question is, why do people that use Facebook messenger on their Iphone appear with the little moon next to their name? I have noticed that my boyfriend is either with the little moon while we're chatting on Facebook or nothing appears next to his name. Does this little moon appear only when he is actively chatting or could it be that when he is using Facebook and not the chat?

How to recover deleted songs off of my iPhone?

I downloaded the app ring.tones off of the app store on my iPhone 4s, and in the process I had to download the ringtone to my computer and back onto my iPhone for it to work. After I did this, and downloaded the ring tone to my iTunes and dragged it onto my iPhone, and somewhere during this all of my songs got deleted off of my iPhone. All of the songs are still on my iTunes music library, but there are hundreds of songs that are on my music library that I didn't want on my phone because they are my siblings, and their iPhones/iPods are just hooked up to the same computer. Anyways, is there anyway to undo this process and somehow get all of my music/playlists back onto my phone without having to manually drag them all back on?

Why are some of my text bubbles dark bule?

I have just realized that some of my text to and from my husband are dark blue. He doesn't have a iPhone and he has a different phone carrier as well. Can anyone tell me why it's doing that?

Does a factory unlocked iPhone let you update the OS without undoing the unlock?

I've looked at an iPhone 4 which is factory unlocked phone according to the seller on Ebay. I heard that if you don't have a lifetime unlock/permanent unlock you won't be able to update the iOS without locking the phone. I want to update my phone when iOS 6 comes out and want to keep the unlock. Would this be possible with a "factory unlock"?

Cool iPhone 4 cases for boys on amazon? - 1

For a 16 year old boy preferably a hard case with a cool pattern on it or picture or quote on it or something nothing too manly or too girly and could you show me it on amazon aswell?