How to clean up duplicate phone numbers in Android phones?

1. Export your phone number. Connect your mobile phone to your computer and export the number in the following format:. csv。 Because of this format, you can open it with EXCLE.

2. Edit the phone book with EXCLE and open the export file. Sort by "Chinese Appellations" first, and duplicate numbers can be deleted.

3. Copy all the choices on the mobile phone to the sim, then delete the mobile phone and click the contact, then function key (menu key, mine is a four-key design, the second key at the bottom of the screen), then click View, then click the interface that appears to select only sim, uncheck the box behind the email account and mobile phone, and click Finish. At this point, all contacts on the sim card will be displayed. If it is deleted, continue to click the function key, and then click Delete, which will let you choose. If you want to delete all, click the function key directly, click Select All, and then delete.

4. Select all icons → Find and select the "contact" icon → Find and select the contact (number) to be deleted → Click the menu button in the lower left corner of the phone → Select to delete the current contact →? Choose ok? Ok.