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Trackers? All Reviews

Facebook Messenger

Text, audio and video calls

#2 Social Networking

iOS Review


It was necessary to disable some of Lockdown's tracker blocking in order to sign into Facebook Messenger (because Facebook itself is a tracker), so the test underreports the amount of tracking connections. Facebook is entirely black-box with no transparency or regard for user privacy in its 15 years of operation. Their messenger refuses to enable default end-to-end encryption (even though most other messengers have this) because Facebook makes its profits by reading and analyzing the personal messages, photos, and videos of its users. We recommend using an open and transparent messenger instead, like Signal.

Facebook Messenger's Privacy Rating is F. We found 1 different third-party trackers in the Facebook Messenger app, and there were 12 attempted tracking connections detected during our test.

Testing Results

Blocked tracking attempts.

How was tracker testing done?

Tested using Lockdown v0.4.0.

What was done during the test?

Everything sent through the Facebook Messenger app feeds into Facebook's global tracking monetization system. It was necessary to disable some of Lockdown's tracker blocking in order to sign into Facebook Messenger.

How many tracking attempts each time the app is opened?

See answer above.

Did user give consent to tracking before tracking started?

See answer above.

Personal Data Collected
🤦‍♀️ Facebook Connect
🖼 Photos
📷 Camera
✉️ Email Address
🙋‍♀️ Full Name
🎤 Microphone
❗️ Notification
📞 Phone Number
📇 Contacts
Trackers Found
Facebook Pixel



Measure Ad Performance

Privacy Policy: Anything present in HTTP headers - IP addresses, information about the web browser, page location, document, referrer and person using the website, Pixel ID and the Facebook Cookie, any buttons clicked by site visitors, the labels of those buttons and any pages visited as a result of the button clicks, Developers and marketers can optionally choose to send additional information, website field names like ‘email’, ‘address’, ‘quantity’ for when you purchase a product or service

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