
In the Find page, it shows people you were recently working on and with, the data is automatically integrated by Graph API.
It is the designed behavior, and I am afraid that remove contact list in the SharePoint mobile app is not available at present.
Meanwhile, to remove contact list in the SharePoint mobile app, I recommend you give suggestion in the feedback portal and help to make improvements. Many features of current products are designed and upgraded based on customers’ feedback. With requirements like this increase, the problem may well be released in the future. Thanks for your understanding and support.
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