How to delete all contacts on mobile phone

iOS devices: Open Contacts > Groups > All Contacts > Edit > Delete All. Android device: Open Contacts >Manage Contacts>Delete Contacts>All. Other methods: 1. Use cloud services to delete contacts synchronously; 2. Use SIM cards to delete contacts.

How to delete all mobile contacts

iOS devices

• Open the Contacts application.
• Click "Group".
• Click "All Contacts".
• Click "Edit" in the upper right corner.
• Select "Delete All" at the bottom of the screen.
• confirm deletion.

Android devices

• Open the Contacts app.
• Click on the three dots in the upper right corner.
• Select "Manage Contacts".
• Select "Delete Contact".
• Click "All".
• confirm deletion.

Other methods

Use cloud service to synchronize deletion

• Open on your device " set up".
• Go to Accounts & Sync.
• Select your cloud service (e.g., Google, Outlook).
• Uncheck the "Contacts" option.
• This will delete all synced contacts from your device.

Using the SIM card

• Remove the SIM card from your device.
• Use the appropriate SIM card reader or adapter for your device.
• Open the SIM card manager software on your computer.
• Delete all contact data on the SIM card.
• Put the SIM card back into your device.

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