Porygon does not evolve by leveling up
You have to get an upgrade and trade Porygon while its holding it, Porfessor Oak should have one
Porygon doesn't evolve at a level. You need a special item to make it evolve.
Porygon's level dosen't interfere with it's evolution, because Porygon does not evolve through Level Up. You need to trade a Porygon with another Pokemon game. Once the traded Porygon reaches the other game, it will evolve into Porygon-2.
Porygon? It doesn't evolve at a level. You need to trade with a certain item attached to Porygon.
Porygon-Z does not evolve any further.
porygon 2 doesn't evolve with a level but it evolves when u trade it with an up grade
No, it can't evolve by level. ;(
trade while holding up grade and it will evolve into porygon 2
he evolves at level 25
It does not evolve give it a upgrade and lavel it up
Porygon does not evolve at a set level. There are 2 discs you can find in the game, make your Porygon hold the right one during trade and he will evolve into a Porygon2. After that give your Porygon 2 the other disc and trade it and it will evolve into a Porygon-Z. I wish I could tell you the name of the discs, but I forgot what they are called.
Porygon does not evolve at a given level: you have to trade it while it is holding the Up-Grade to evolve into Porygon2. Then trade that while holding the Dubious Disk to get a PorygonZ.
Porygon does not evolve by training it levels. You must trade with an Up-Grade attached.