Only if you do not have any of the data plans that contain monthly amount of data, we will send you an SMS about the start of using data plan when your phone connects to the Internet for the first time. Your phone starts using the default data plan Connection for a month.
If you have a smartphone (such as Android, iPhone, or Windows Phone) and you also use MMS, we recommend that you have any data plan active and also have enabled data on your phone at the same time. MMS may not work with a disabled connection (we do not charge data associated with receiving/sending MMS).