I have some major emoji problems

My emojis randomly stopped working on my iPhone 4.it's fully updated. All of the sudden they aren't sending all the way through! To me i can see the emojis in the convo but when I send them to people, on their phone it looks like "?=?" and they have iPhones with emoji also so know the problem is on my end. What do i do to fix this!

Is virgin mobile canada cdma or gsm?

I have a blackberry at the moment, and i want to get an iphone, i'm not eligible for an upgrade yet so i was planning on buying my friends iphone, but i hear virgin mobile is a cdma carrier at least in america, and my friends iphone has a sim card, so if i want an iphone do i have to buy it full price from VM?

What is player growth in FIFA 12 iPhone?

Hi so I'm wondering what player growth is in the iOS version of FIFA. I have FIFA 12 and I'm playing as Barça and Messi has a rank of 93 and I filled his bar completely to 94 but then the bar just reset and he was still rank 93. The same thing happened with Ballotelli. I don't think I have a correct idea of what player growth is in FIFA.

Does jailbreaking void unlimited data plan?

I'm a little behind in the times, and technologically stupid. I recently bought an iPad with only Wi-Fi capabilities. Someone told me that if I jailbreak my iPhone 4, I can use it as a hotspot for my iPad, without having to add 3G to my plan. I have an unlimited data plan on my iPhone. Will AT&T really void that plan and charge my bill without my consent if I jailbreak it and use the hotspot function?

Why will my iphone touchscreen work only sometimes?

I've tried resetting it that didn't help.shut it off and turned it back on that didn't help either. I can slide it to unlock it but then i can't select any icons or do anything.sometimes it will work fine for a few minutes then it won't do anything. Is there anything else i can do without taking it to a repair shop or getting a new phone?