sim not valid
please I have iPhone 7 which bought online but it dose not aspect sim card in my country
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If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad - Apple Support
Though it’s quite possible that you’ve purchased a SIM-locked device. Which would mean you’ve now effectively picked up the remainder of the seller’s contract with the seller’s carrier. And the carrier may or may not be willing to unlock the device.
The All Too Common SAD Reality of Buying a used iPad/iPhone - Apple Community