Instagram: Creating an Account and Username, Update profile, username policy and violation
To create an Instagram account from the app:
Download the Instagram app from the App Store (iPhone) or Google Play Store (Android).
Once the app is installed, tap to open it.
Tap Sign Up With Email or Phone Number (Android) or Create New Account (iPhone), then enter your email address or phone number (which will require a confirmation code) and tap Next. You can also tap Log in with Facebook to sign up with your Facebook account.
If you register with your email or phone number, create a username and password, fill out your profile info and then tap Next. If you register with Facebook, you’ll be prompted to log into your Facebook account if you’re currently logged out.
