Some Pokémon evolve when traded, while others require a trade while holding a particular item. The exact list and methods vary by generation, and newer games sometimes provide alternate evolution methods when traditional trading is not available. If a trade evolution fails, check whether the Pokémon must hold an item, whether the game supports that evolution, and whether it is already holding an item that prevents evolution. Trading can also be useful for completing a Pokédex or obtaining version-exclusive species. Use trusted trading partners and avoid sharing account credentials or personal details during online trades.
