Facebook does not use profile views to suggest friends. The system looks at deeper social signals instead.
How the algorithm works
Friend suggestions are generated from a mix of data points that show a real‑world or online connection. A single profile click is not a trigger.
- Mutual friends – The number of shared connections is the strongest indicator.
- Contact sync – If you’ve let Facebook read your phone or email contacts, the platform can match you with people who have your number or address on file.
- Shared groups and events – Participation in the same online communities or real‑world events adds weight.
- Location and Wi‑Fi proximity – Devices that frequently connect to the same network or are in the same physical area can be linked.
- Bidirectional interest – When two users search for each other or interact with the same content, the signal is stronger.
Why the myth persists
People notice a coincidence when a profile they looked at appears in the “People You May Know” list. Because we remember the few times the link happens and forget the many times it doesn’t, the story feels convincing.
What you can do to control suggestions
You can limit how Facebook uses contact information by turning off address‑book sync. You can also adjust the privacy settings for who can find you via email or phone number.
When you’ll see a new suggestion
New connections typically appear when:
- You and the other person share at least three mutual friends.
- Your contact lists overlap.
- Both of you attend the same events or belong to the same groups.
- Both devices have been on the same Wi‑Fi network or in the same physical location.
Key takeaways
- Profile views alone do not trigger friend suggestions.
- Mutual friends are the main driver.
- Syncing contacts can create matches.
- Shared activity and proximity add extra weight.