Unless you have some kind of specialist spy software that is currently hooked up to your phone, there is no way you can just view text messages on the T Mobile website for your T Mobile phone. Software that does this would allow you to view text messages within a window of that particular application.
T Mobile users, however, do have the ability to check the amount of text messages that they have sent and received by dialing a code, getting in touch with the T Mobile customer service hotline, or by going on the Internet to the T Mobile online member area. These online services are incredibly popular, as for customers who have text messaging plans it may be difficult to keep track of how many text messages they are sending. If they use too many, they will of course be charged - and hence, keeping track on the Internet is a great way of making sure that they do not go over their limit and have to pay more money.
If you want to do this, then what you need to do is dial "#674#" on your T Mobile cell phone. You then need to either hit ‘send’ or ‘call, and you will have begun. Your text message usage should then appear on your screen. The other option is to get in touch with the customer service line. You will need to Dial ‘611’ on your phone, and follow the voice menu options. When you are told that there is a ‘message usage’ option, you should press the appropriate button. The voice system should then respond to you with information regarding your text usage.
Finally, you can go online to www.my.tmobile.com and log in with your details. You will be shown all of your information in your web browser.