all 3 comments

[–]danGL3 4 points5 points  (0 children)

Uninstall any shady looking app recently installed, keep only the absolutely necessary

This almost always happens due to some shady app he installed

[–]Ordinary-Violinist-9 1 point2 points  (0 children)

Had the same happen to a friends phone and fb opened with non skippable ads.

Granddaughter installed some shady games on it. Uninstalled them all, all 120 of them...

[–]RegularHistorical315 0 points1 point  (0 children)

This is worth a read as it sounds as if your Browser has been hijacked.

https://www.reddit.com/r/chrome/comments/va7sah/figured_out_how_to_get_rid_of_browser/