Data on straight talk/virgin mobile?

I recently bought an iphone 5 from straight talk. DON'T DO IT! The data does not work. Even though I'm paying for unlimited data. You can't send pictures and you also can't get visual voicemail. Well, heres where the saying "you get what you pay for" comes into play.
Obviously, I'm now in the market to go through somebody else's service.
I'm thinking about virgin mobile. I'm scared the same thing will happen. Will somebody who has a virgin mobile iphone please tell me if their internet works without Wi-Fi? Also, can you send pictures to non iphone users? (with straight talk you can only send pics through Wi-Fi and only to people who also have an iphone).

How to retrieve lost text messages? Sprint iphone 5?

My iphone 5 wasn't working properly so I went to the apple store to get it fixed. They replaced it with the new phone. However, I was waiting for a text from someone when they did it. The phone was not activated right away because they said the Sprint server was down. I waited a couple hours and retry but didn't work. I took it to the Sprint store and still didn't work. Anyway they finally solve the issue and got my phone activated and restored all the contents next day. However the time that my phone was off service, I may have received some text messages. I know this because I told my friend to text me during that time that my phone service was off. So the message was definitely send to me. When I finally got my phone restored back to normal, I couldn't find any new messages and even the message that my friend send wasn't there. How can I retrieve all the messages that were send to me during that period.

Can you use a straight talk SIM card from a iPhone 4S on a Samsung galaxy s3?

I have a factory unlocked iPhone 4S right now with a straight talk SIM card in it. I'm wanting to get a Samsung galaxy s3 and use it on straight talk but I was wondering if I have to buy a new SIM card or can I just use the one that I have been using on my iPhone 4S. And also I'm wanting to do a straight trade for the phone so I was wondering is there anyway I can keep my same number if I won't have both of the phones to transfer the number?

Are iPhone buyback sites trustworthy?

I recently got a new iPhone to replace my old one with a shattered screen. I'm looking at some buyback websites like Cashforiphones.com, Appleshark.com, and Usell.com - has anyone used any sites like these? Did they pay accept your phone and pay you? I just want to make sure the site I sell to is trustworthy before I go through with anything. Thanks!

Added (1). Edit: To be clear, I'm trying to sell the old phone.

How much can the Iphone 5 32gb Hold?

This is my first question and i just wanted to ask what iphone size i should get. I know i'm getting the iphone 5.It might seem a lot, but i've made a list and i'll have about 120 apps (in folders), around 100 songs, probably about 300 photos (i'd put them on my computer every month or so though- i love taking photos!), about 100 contacts, and a few videos. Sorry if it's quite specific! And just a question about yahoo! Answers; do people from america answer these questions from the uk then?

Is my iphone completely broken?

I have an iphone 4 that is already pretty messed up… Its badly cracked on the front and the home button broke. So its pretty damaged but i've never had any problems with it even with all of that but the other night i was washing my face and some water splashed on my phone which it really wasn't even bad and i've accidentally gotten water or other liquids on the front many times before and it was always fine so i wiped it off pretty well but like 15 mins later it just turned off and i when i tried to turn it back on it said to plug it in to a power source so i did and it was plugged in for like 20 mins and got extremely hot! I kinda freaked so i unplugged it. It does this everytime. I put it in a bag or rice for like 24 hrs and it still does this every time. Should i keep it in the rice longer? Or take it in to see if it's just gone