Check your phone settings for carrier lock status
Insert a SIM card from a different carrier
Make a test call, send a text, or use mobile data with the new SIM
Contact your current carrier and ask if the phone is unlocked
Use your phone’s IMEI number to check unlock status on the carrier’s website
Check the original purchase receipt or account details for unlock confirmation
Restore or reset network settings if the phone does not recognize a new SIM
If the phone works normally with another carrier’s SIM, it is unlocked