Unlock the network
How can I do for unlock the network of a iPhone 8 Plus
How can I do for unlock the network of a iPhone 8 Plus
Contact the cell service provider it is locked to and ask them what their unlock process is and if you qualify.
If you do not know the cell provider call AppleCare and ask them who your iPhone is locked to.
Start here: https://support.apple.com/en-us/HT201328
Unlock the network