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.
The above is the detailed content of How to delete all contacts on mobile phone. For more information, please follow other related articles on the PHP Chinese website!

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