you do need cheats
No, the only way is to attend a Nintendo event.
The only way to get Celebi on Pokemon Pearl without AR cheats is via event distributions. However these events are no longer being held or supported for Pokemon Diamond, Pearl and Platinum.
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You can only get celibi with cheats sorry
There is no such thing as a real Celebi Fossil. However with cheats and sketchy modding it may be possible.
By trading for it.
You can't obtain Celebi without an event or a gameshark. Don't listen to the people who tell you that you can get it without cheats.
You cannot obtain Celebi in HeartGold without cheats if you missed the event.
You need the event to find celebi without cheating.
you cant without cheats or out of game help
It's impossible to obtain a Celebi in any game without events or cheats. If u don't want to go to an event or get cheats, either hack ur game or glitch it.