you have to trade with pro oak a mew
Mew is one of the many Pokemon that does not evolve
Either you get it from an event, or some cheat that I don't know, you can't get mew in sapphire.
Mew is not available in Pokemon Sapphire through normal game play. You must use a GameShark with a hacking code to get Mew.
There is no possible way to get a Mew in Ruby or Sapphire. The only way to get one is from Nintendo events.
only through events which will never go on since the ds was evented.
There is no mew in sapphire.
no because there isn't a mew-three just mew and mew-two sorry
you can not
You just cant