You can change your name only once in Pokémon Go, and it’s not easy to change your team. Actually, it’s kind of a pain. But if you insist on doing it, read carefully: We’ve spelled out everything you need to do to change your name and team in Pokémon Go.
How to change your team in Pokémon Go: Tough. You need to contact Niantic support.
New players to Pokémon Go might want to think carefully about which team they choose to join when they hit trainer level five and visit a gym for the first time. You’re given one chance to change it, and only one chance.
According to developer Niantic’s Pokémon Go blog, officially, you’re not allowed to change teams at all. Maybe Niantic wanted to post that notice in order to lessen the load on its customer support staff, because customer support is the only way to change your team.
If you click this link, you’ll open a support ticket on the Pokémon Go blog, after which you can request a team change. According to reports, Niantic will only accommodate this request if you’re a low-level trainer because the request is meant to help people who chose the wrong team by mistake.
You’re going to have to give Niantic a bunch of information, including your operating system version, device manufacturer and device model. If you’re going to pursue this avenue, it might be wise to gather that information before you sit down to submit your request.
How to change your name in Pokémon Go: Easy. You can change your name right in the Pokémon Go app.
Just go to Settings, then tap “Change Nickname” and complete all the pages that follow. Pay heed to the warning before you begin the process, however. You may only change your name once.