WATCH | This man plays Pokémon Go on 15 phones attached to his bicycle

Chen San-yuan, 70, has been dubbed "Pokémon Grandpa" for playing Pokémon Go on 15 mobile phones which are attached to his bike.

Euronews reports Chen learned about the game from his grandson.

He said: "I used one cell phone back then and kept playing and playing. After a month, it became three cellphones, six cellphones, nine cellphones, 12 and 15, like that."

He spends an average of $300 a month to buy virtual currencies in the game.