i have already unlocked rnet and how to catch mew...it is like impossible. every time i try to capture it it just teleports away and it needs 17 loops..
You could also catch Wurmples and other bug-types, and use their PokeAssist... Mew is weak to Bug types, so if you're fast enough, it's a good strategy.
i tried using bug pokemon already....and i circle as fast as i can but i only can get to 4 b4 it teleport away.....maybe i am too slow but i was like going insane circling the MEWWWWWWWW..*frust*