T-Mobile Will Start Selling Your Personal Data on April 26 Unless You Opt Out (extremetech.com)

Ars [1] has the 2 direct links you will need to opt out. These appear to be missing from the ExtremeTech article.

[1] - https://arstechnica.com/tech-policy/2021/03/t-mobile-will-te...

Also discussed here 2 days ago:

https://news.ycombinator.com/item?id=26403614

Oh good, they're getting me more fscking ads for my birthday.

Good thing I don’t use T-Mobile.

I’m sorry for the rest of you, though.

T-Mobile is 1) being very open about selling your data and 2) giving you fairly easy ways to opt-out in advance. Like it or not, your data is an asset -- that's just the age we live in, but at least T-Mobile is giving you some control over its use.