It’s effectively an SMS message from the cell tower to every device that can receive the signal (Whereas an SMS message is addressed to a specific device), it’s been a part of the relevant radio specs since the 90s, we’re just slow to adopt it as usual.
It’s effectively an SMS message from the cell tower to every device that can receive the signal (Whereas an SMS message is addressed to a specific device), it’s been a part of the relevant radio specs since the 90s, we’re just slow to adopt it as usual.
https://en.wikipedia.org/wiki/Cell_Broadcast
Any outside party involvement would be due to outsourcing, nothing inherent to the technology.