If an address book contains duplicate or multiple contact duplicates, they must be cleaned up using the tools provided by the respective software. Manufacturers either provide their own corresponding tools or third-party tools can be used for this purpose. The following methods are known to us:
|Apple iPhone (Contacts connected via Microsoft 365, Apple iCloud, Google)||See Apple guide|
|Apple MacOS App "Contacts"||Select contact -> Menu: "Contact Card" -> "Find Duplicates"|
|Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, Outlook 2007||See Microsoft guide|
|Google Contacts / Workspace||See Google guide|
Various third-party tools available
Restore from Backup
If necessary, the manufacturer can reset the address book to a specific state on a specific date. Contact the manufacturer for this.
All information is provided without guarantee.