How does oppo mobile phone delete phone contacts in batches?

The operation methods of deleting contacts by mobile phone are 1 and ColorOS versions. Enter a contact and click "Edit" in the upper right corner to delete the contact. 2. For ColorOS version 2.0, click the contact to be deleted-Edit in the lower left corner-Delete the contact; 3. For the version of ColorOS 1.0, click the contact to be deleted-Edit in the lower left corner-Delete the contact; 4. For other versions, enter the contact, and click the contact to be deleted in the lower right corner-"Delete (trash can icon)". The method of deleting contacts in batches by mobile phone is as follows: version 1 and ColorOS 3.0. Go to Settings-Phone Book-Delete Contacts in Batch-Select the contacts to be deleted and click Delete; 2. Enter contacts for other versions-long press a contact-tick on the right (multiple choices are allowed)-click "Delete (trash can icon)" in the lower left corner to delete. This answer applies to all OPPO models.