IPhone 4 is downloading random apps?

I'm literally watching random apps appear on my phone as I delete them. They're completely random and I don't know what the hell is going on. My dad had my phone for a few weeks to update it or something so he might've done something to it. How do I fix this? It's very irritating.

How to get symbols like this on my iphone 4s?

Okay its not emoji for these symbols, because I already have that, so please don't say that. I want symbols like these:
❤ ❥ 웃 유 ♋ ☮ ✌ ☏ ☢ ☠ ✔ ☑ ♚ ▲ ♪ ✈ ⌚
♥ ❣ ♂ ♀ ☿ Ⓐ ✍ ✉ ☣ ☤ ✘ ☒ ♛ ▼ ♫ ⌘ ⌛ i
♡ ღ ツ ☼ ☁ ❅ ♒ ✎ © ® ™ Σ ✪ ✯ ☭ ➳ Œ ✞
℃ ℉ ° ✿ ϟ ☃ ☂ ✄ ¢ € £ ∞ ✫ ★ ☯ ☪

without having to copy and paste them all the time for instagram and stuff like that. Is there an app i can get these specific symbols from?

Can you bring your iphone 4s to att?

I would like to bring in my own iphone to att. I already know you can get the go phone sim but i'm wounder because i'm pretty sure i read that online somewere. I would like to know is it possible to bring a phone into the att store so i don't order anything online! Understood

How would I go about doing this?

Just got my iPhone 5 a few weeks ago over the phone. I'm with tmobile.

Anyway, I'm not pleased with it. Music quality sucks coming out of the speakers and I want a bigger screen so how would I go about trading my iPhone in to get the Galaxy 4?