My new phone won't let me...its OWNER...uninstall facebook and its associated apps.
The best I can do, and have done, is 'disable' them.
But it pisses me off that I can't obliterate them from MY PHONE, you know?
The only device I've seen like that, with Facebook as system, was a PCCW variant Samsung Galaxy S3 that came from Hong Kong.
I posted about it years ago on AF, with it consuming excessive data in mainland China.
That's the price of carrier subsidized phones, the carriers get kickback from the likes of FB. It's “MY PHONE" but really it belongs to the carrier who subsidized it.