How to Change Instagram Username
On both Android and iOS, the process to change the username on the Instagram app is the same. It goes as follows:
From Profile
Step 1: Open Instagram and ensure it is logged in.
Step 2: Go to your Profile page.
Step 3: Tap on Edit Profile.
Step 4: Tap on the Username box and change it.
From Accounts Centre
Step 1: Open Instagram and make sure you are signed into your account.
Step 2: Go to your Profile page.
Step 3: Tap on the three-dash menu option in the top right corner.
Step 4: Tap on Settings & Privacy
Step 5: Tap on Accounts Center
Step 6: Tap on Profiles > your username
Step 7: Tap on the Username option again
Step 8: Edit the username.