i bought a Samsung note 4 unlocked and I tried to put my sim card in it from my Verizon phone and it is not working. It saying that the sim card is not registered
Did you make sure the Note 4 you got is the correct one to use with Verizon. There are two types of network connections, AT&T, T-Mobile and most budget operators like Metro PCS use one type, Verizon and Sprint use another type.