Not everyone knows this, but both Verizon and AT&T are selling your personal data to advertisers. Furthermore, these are opt-out programs, not an opt-in program. This means that unless you already went through the opt-out procedure, they have likely already sold your relevant personal info (like anonymized location data, age, gender, usage habits, sports teams, dining and others) to advertisers and will continue to do so. Many companies have opt-in programs, which means they default to not selling your personal data, unless you give them permission to do so. Unfortunately, with AT&T and Verizon, their terms of agreement are the opposite, and most people don't bother to read their policies when they sign up for new service.
What is even more frustrating about Verizon is that they only have a 30-day window for you to opt-out. Afterwards, your data is fair game. Regardless, we thought it was important to share this info with our members, and give you some links to their respective opt-out programs.
Verizon - Disable Customer Proprietary Network Information Sharing
AT&T - Disable Customer Proprietary Network Information Sharing