Facebook uses the information you have uploaded about your contacts to make friend suggestions for you and others. To stop the friend finder suggestion, turn off continuous uploading and delete all of your imported contacts.
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Turn off Continuous Uploading on Mobile Devices
If you have continuous uploading turned on, Facebook will keep uploading your contacts from your device. Turn off this setting on any devices where you use the Facebook app.
Tap More — the icon with three horizontally stacked lines — in the Facebook app on your mobile device.
Tap Settings on your iOS mobile device or App Settings on your Android device.
Tap General on your iOS mobile device.
Tap Upload Contacts on your iOS mobile device or Continuous Contacts Upload on your Android device.
Tap the toggle switch to turn this setting off.
Remove All Imported Contacts
After you have turned off continuous uploading, remove your imported contacts on the Facebook website. You can remove one or more contacts by selecting it and pressing Delete Selected. To save time, delete all of your imported contacts.
Click Find Friends while on any Facebook page.
Click Manage Imported Contacts in the Add Personal Contacts box.
Scroll to the bottom of the page and click Remove All Contacts.
Click Remove.
Facebook now processes your request and notifies you when it is complete. If you have a large contact list, this may take a few minutes.
