To solve the problem of iPhone prompting "Mobile phone number is not associated with this phone", just set it up like this!

When using iPhone, some users have encountered such a prompt appearing in the settings: This number has been used to register your Apple ID, but it is not associated with this phone.

This prompt may be related to trusted phone numbers. You can check the settings first.

View trusted phone numbers:

Open iPhone Settings-Apple ID-Password & Security and view trusted phone numbers here.

If the current trusted number is not the phone number bound to the Apple ID account, you can tap "Edit" and then click "Add Trusted Phone Number" to add it.

It is recommended that the trusted number should be filled in with a phone number that can be used normally, so that it can receive text messages for verification when it is necessary to log in to other devices through Apple ID, change the ID password, etc.

If you have filled in the trusted phone number and the above prompt still appears, you can continue to try:

Reinsert the SIM card; turn off "iMessage" in Settings - Information, and then Re-open and activate iMessage using that phone number.

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