how do i see or listen to my voicemail online

That would be nice if it worked, but there is no PHONE at the top of the page, so it fails at the first step.

htghtg wrote:

Si eres el titular principal de la cuenta, puedes revisar y administrar tus mensajes desde tu computadora:

 

Visita Mi T-Mobile y ingresa  a tu cuenta.

 

Haz clic  MÓVIL en la parte superior de la página.

 

In the list along the right, click Check Voicemail.

 

En la nueva página que se abre, tienes varias opciones:

     Listen to a message: Click the play button just to the left of the message.

     Take action on a message: Simply check the box to the far left of one or more of the messages. Once a message is checked, you can delete,      mark as unread, download, etc.

     Forward a message to an email address: Click Send as email to the far right of a message, add the email recipient in the To box, and then click      Send e-mail.