Verizon Wireless has changed its privacy policy and will be using data collected from users’ phones for internal reports and better targeted mobile ads.

The largest wireless carrier in the U.S. started reaching out to customers Friday, informing them of the policy changes and offering users a way to opt out of data collection.

Verizon says that any of the data it shares with third parties — like advertisers — will not be personally identifiable.

The type of data that Verizon is collecting includes:

- URLs and search strings
- Device location
- App and device usage
- Information about a user’s Verizon products
- Demographic information such as gender and age range