How do I resolve 'SIM not supported' error on iPhone?

My iPhone is given me a message "sim not supported" when the phone is not locked phone cos it was purchased at Apple store



[Re-Titled by Moderator]

iPhone XS Max

Posted on Feb 12, 2025 5:50 PM

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5 replies

Feb 12, 2025 6:26 PM in response to Mac Jim ID

Mac Jim ID wrote:

Did you purchase the phone at the Apple Store using installments with AT&T?

When you purchase an iPhone at Apple, you’ll receive an unlocked model that you can use with any carrier. The only exception is if you purchase an iPhone through AT&T Installment Plans — you will receive a locked model.
iPhone - Shopping Help - Apple


For what it's worth, on iPhone ordering pages, words like "And your new iPhone will be unlocked" disappear whenever you select any carrier financing plan – not just AT&T's.

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How do I resolve 'SIM not supported' error on iPhone?

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