The first time you signed up with Chatr wireless, they would have given you a temporary password for you to login into your Chatr account online. If you haven't received any temporary password or you have lost the password, you can simply call Chatr customer service at 1-800-485-9745, or call *611, Identify yourself and explain to them that you will need a password reset. Once you have a temporary password, you can then login into your "My Chatr" account online and change it to a new password for your own security.
To login to your Chatr Wireless online account, simply enter your phone number and your password. Once you are logged in, you will notice under the section "Account Status", there is your "Plan" type and the amount of monthly payment, you will pay each month. Just beside it, you will see an option to "Change Plan". Click on it, and you will see a list of all the available monthly phone plans. Click on the monthly phone plans you are interested in and then choose "Continue". Follow the instructions thereafter and you will have successfully changed your phone plan online.