Question: how to change your trainer name in pokemon go?
Answer: Tap on the Pokeball button at the bottom of the map screen.
Tap on Settings at the upper left-hand corner of the screen.
Scroll down to Change Nickname and select it.
Tap Yes.
Type in your new nickname.
Tap Ok, then Yes a couple more times.
On the pop-up that says "You are now known as (your new nickname)" tap Ok.