not register on a network

Hi

I suggest you register on these forums and post the question again in the note 2 forum with as much info as possible eg

Is the phone new or new to you? Has the sim been enabled (if it has one)
Has it been used previously on a different network - if so it could be network locked
Do any other phones on the same network work where you are ie is there a signal to register with?

There are many possibilities. ..

Roger