Answered question
My office uses RSA security tokens sent by SMS to login to the mainframe. I am wondering if there would be an issue in receiving those text messages because of the known issue stating :
Inability to receive text messages (SMS) from certain companies such as Microsoft and Google.
What I know for sure is that is an issue with text message coming from short number and Ip number like Skype as well as other non standard number.
So if I were you, I would be very careful before switching to Fizz, unless you can test it first.
Chizz :))