I cleaned my iPhone 8 with a lint free cloth and a little water but there's still smudges?

I cleaned my iPhone 8 with a lint free cloth and a little water but there's still smudges?

Try sticky tape

You may need some Orange Clean or Goo Gone, which contain gasoline, essentially. Be sure to clean thoroughly after using these, and only clean with device off!

Microfiber isnwhatnyounwanj