I checked with your phone specifications with gsmarena.Your phone supports only GSM carrier.So you can't use Verizon(CDMA) service.If you want to use other GSM carries than you current carrier means,you will need to unlock your phone.For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like MobileUnlockSolutions.com Here you can unlock your phone at low cost.