Here you can change your profile photo and user ID, verify your identity, and proceed to security settings.
If you want to change a profile picture, tap on the Photo section (this action will turn on the camera on your mobile device) and take a photo. Tap on Retake if you want to take another shot or Done to make the latest image a profile picture.
To change a user name, you should click on User ID. Replace an old user name with a new one and tap on Save.