> Why would a phone company know a person's SSN?! As Brit-expat+US-resident (since 2012) T-Mobile got my SSN when I signed-up for my pre-paid first mobile pho

> Why would a phone company know a person's SSN?! As Brit-expat+US-resident (since 2012) T-Mobile got my SSN when I signed-up for my pre-paid first mobile phone plan in 2012. Paying $50/mo was quite a shock when equivalent (or rather: far superior) service was available in the UK on a PAYG (not even pre-paid!) basis for £10/mo. ...and now I'm on a $110/mo postpaid plan because eventually you get tired of the limitations and just grin-and-bear-it.