If I add "facebook.com": ["Mobile","Mozilla/5.0 (Ubuntu; Linux; Android 4.2.2) AppleWebKit/537.21 Mobile Safari/537.21"],
after google.com then m.facebook.com works nicely too.
If I add "facebook.com": ["Mobile" ,"Mozilla/ 5.0 (Ubuntu; Linux; Android 4.2.2) AppleWebKit/537.21 Mobile Safari/537.21"],
after google.com then m.facebook.com works nicely too.