How can I remove a browser redirect virus ios11

I’ve been hacked. Not sure if it came from an Apple store app or from surfing. He’s everywhere now on my phone. I don’t know if I should attack it one piece at a time. He’s using browser spyware, smart caller to spoof phone calls & god knows what else. He’s taken over my FB identity, selling things to y friends & family, I think collecting for fake charities. Uses an app to change FB pw, trusted contacts, etc. immediately after I do, hes sending me fake emails from FB. He’s on every web browser. Changed my settings at will. Should I just log out of every account. Wipe the phone, login somewhere else, & reset all passwords? ~~~~~~~~~~~~~~ Locked as duplicate of https://support.mozilla.org/en-US/questions/1196447