Facebook has made a number of deals with Samsung and other Android smartphone makers to make it impossible for people to delete the app.
The deals, first reported by Bloomberg, mean the Facebook app comes pre-installed onto devices and can only be disabled and not permanently removed.
It is not known how many deals were made with companies, but affected devices include the Samsung Galaxy S8.
Permanent apps that come pre-installed on smartphones, referred to in the industry as bloatware or crapware, are a common feature on Android phones, though usually they are native to the device manufacturer.
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https://www.independent.co.uk/life-style/gadgets-and-tech/news/facebook-app-delete-android-smartphones-samsung-galaxy-a8719081.html?utm_source=reddit.com