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How to delete contacts in batches in mx3?

Meizu MX3 mobile phone does not support batch deletion. Deleting all can only clear data, delete and edit contacts individually, open the contact details, click the menu key, and select delete or edit.

Enter *#*#6961#*#* on the dialing interface and enter Settings-Accessibility-Applications-All, find (1) Phone/Message Storage (2) Phone and Contacts (3) Contact Personal storage, clear data in all three items to delete all contacts.

Finally, you can log in to the Flyme account on the mobile phone, enable data and synchronization, and then delete it in the Meizu official website Flyme cloud service, as shown in the figure below.