I have no service on new phone
Best answer by Allan M
A few things, a sim card will come with the new phone but that sim is not activated. You can just take the sim out of your current phone and put it into the new one.
If the sim doesn't fit then you can activate the new one that came in the box through your self serve account.
You can also try just turning your phone off and back on as that will fix most service issues too.
If that doesn't work if you could provide us with some more information so that we can help out that would be awesome!