How to read received texts with T-mobile home internet

MelTX wrote:

My own NOKIA gateway had problems displaying messages.  The most recent message seemed to be at the top of a non-scrollable list --- so it was not accessible.  

I eventually used my phone to send a SMS message to the DUMMY-number of the gateway.  That new message seemed to cause the message-list to scroll-down. That exposed the message containing the PIN-number.

{{{ I realize this is an OLD topic but perhaps this procedure may be helpful for others? }}}

Thanks for the tip!  This worked for me (Nov 2022) and allowed me to sign up for the Tuesday’s promotions in the app using the pin sent to the gateway.