Were the courts not enough control for creditors? Since when are they allowed to lock you out of your purchased property without a court order?
I don't think courts are typically involved for civil repossession.
But it sounds like this is used when the device isn't your purchased property, but leased on contract.
I guess it makes sense for them to do this if people started leases, paid the first month to get the phone in their hand, then walked away with the nice new phone they paid like $35 for, to sell or just use off-network.