Tech How T-Mobile, AT&T, Verizon and Sprint fight robocalls on their network July 8, 2019July 8, 2019Madeline Purdue, USA TODAYComments Off on How T-Mobile, AT&T, Verizon and Sprint fight robocalls on their network Your cell phone provider can help protect you from robocalls. These are the tools T-Mobile, Verizon, AT&T and Sprint offer to their customers.