Cryptocurrency investor robbed via his cellphone account sues AT&T for $224M
I hope he wins, mainly so cell operators will perhaps take security more seriously.  Not long ago, I was with T-Mobile. My username was my phone number, and the password, you could request and they'd send it to you in an email.  
With the climb of social media, our phone numbers are more a part of our identity than ever before, and carriers lack of security is being thrust into the spotlight.