My old phone got eaten by a dog! the only thing that was undamaged was my sim card, so I took it out of my old, broken phone and bought an unlocked samsung GT-S5230 (my first touch screen phone) and I love it! The only bad thing is that I cannot connect to the mobile internet on it, I get the message: "service unavailable". Is there anything I can do to get the net on my phone? 
thank you for all your help!
I have unlimited family data on my plan along with unlimited messaging. still no net
thank you for all your help!I have unlimited family data on my plan along with unlimited messaging. still no net