This is information that you can quickly verify with our iPhone simlock status tool. It is important to know if your phone is tied to a particular carrier or not. Your ability to use a SIM card from a different carrier or select a new mobile service may be restricted if your phone is sim-locked. When arranging a trip abroad and wishing to utilise local SIM cards to minimise expensive international roaming fees, this can be especially helpful. When buying a secondhand phone, it’s crucial to know the lock status to make sure the device isn’t connected to any specific carrier.