how do i bypass the sim card not supported thing

Welcome to the Apple Support Communities.

Please see: How to unlock your iPhone for use with a different carrier - Apple Support for troubleshooting steps.

Cheers,

Jack

cade22 Said:

"How do i bypass the sim card not supported thing"

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Whom to Contact:

Contact your Carrier for assistance, as they are the one who provide you with the service of Cellular.