The mobile phone calendar shows that I signed in from other places.

What should I do if my mobile phone calendar shows that I have signed in from other places? The mobile phone calendar shows the steps to solve my check-in in other places:

1. Confirm whether there is an error: check the details of the calendar event to find out how the event was added. You or someone else added the event by mistake.

2. Check the relevant appointment records: check your email, SMS or other communication records to confirm whether there are any appointment records related to this activity.

3. Delete or edit calendar events: confirm that the events in the calendar are wrong, and delete or edit them directly. In the calendar application, locate the event and select the delete or edit option.

4. Password protect your device: You find that an unauthorized trip has been added to your calendar, so please make sure your device is secure. Please set password, fingerprint or facial recognition security measures to prevent unauthorized access and operation.

5. Seek technical support: If you can't solve the problem or are still confused about the source of the incident, please contact the mobile phone manufacturer or relevant technical support department for further help and guidance.