I need to know the carrier of my iphone

Hi. If you have an mvno(mobile network virtual operator) which is a carrier that uses one of the major USA phone carriers,it may not show. Also,if you have airplane mode on,it won't show. If you look on the back of your phone,it should show the model number... for example,( A1634). If you see it,then google it,it will say what carrier it is for.

Goto Settings > About > Carrier listed who is holding the lock on your iPhone.