Iphone 3gs tech issues.

I have an Iphone 3gs and I am having messaging issues. I can't picture text at all. Cant send or recieve. Can't print from my phone. My daughter has a Ipad and she can print from her Ipad. Also I can't send multiple people when sending one message.

To start from the begining I bought this phone and am using Straigt Talk service but it is an AT&T phone. I have an at&t compatible sim card. When I got this from someone they said that if I have the phone unlocked my phone will be able to use the text messaging. I have done this and it still doesn't work. Also this information was the same when I asked Apple at my local store.