TFA states after T-Mobile terminated their relationship with his business, he social engineered their help desk to steal credentials from other employees. It also states he made $25MM from the use of the stolen credentials.
Not that I disagree that telcos should stop locking phones. Then again, this is why I don't buy telco branded phones to start with.
but it doesn't seem like he did anything (morally) wrong with that access. Just helped people dodge T-Mobile's abusive practices. It would be one thing if there was like SIM swapping or something, but it doesn't look like that happened here.
Not that I disagree that telcos should stop locking phones. Then again, this is why I don't buy telco branded phones to start with.