Nov 5, 2015 - 3:24 PM
in reply to JaneQ
Indeed, it needs to be unlocked to use any other SIM card. One way to try if it's locked is to insert another SIM card (from any other carrier than your own one). If it works, the phone is unlocked. You can also ask your carrier. If they sold you a phone and a SIM card as a package it's most likely locked until your subscription is expired. Once it's expired you can ask them to unlock the phone. If you purchased a phone and a SIM card separately it's most likely unlocked.