Help with phone

I just got a Blyk sim card, now I've used my sisters in my phone before and thats worked fine.

I just put mine in and nothing has happend, I've sent messages asking for the settings but I don't get a thing.

I have a Samsung E900 and it's meant to be on Orange.

Halp?@

It will probably be locked to Orange.

But my sisters Blyk sim worked in it?

ADDING NEW INFO

So ifyou infract me for a double post i'll hunt you down and eat you.

But on the Blyk website it says

"To join Blyk you need to have a compatible phone, and it must be unlocked (or able to operate on the Orange network)."