3g not working

[GalaxyBrad]

Hey guys.I have updated my samsung galaxy s plus manually to 2.3.6 and everything seemed to be ok but when I tried to use 3g(today is the 1st day I try it) it simply didn't work.not even the 3g image appeared in notification bar?What to do?

 

[Hadron]

Check your APN settings?

 

[GalaxyBrad]

I'm such a dumb!I forgot I have wiped all my data!Thanks for the answer