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ive read where you must use the new sim card in an iphone 12 for it to work at its best. Is this true? AT@T user

iPhone XR, iOS 14

Posted on Oct 25, 2020 3:11 AM

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Level 2

147 points

Posted on Oct 25, 2020 4:39 AM

If your existing SIM Card is 5G ready, there is no need for a new one.

You can check with your carrier.

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