[michael_j_x]

I don't understand this sim-swapping concept. Where I am from (EU country), if you need to get a new sim for your number, you have to physically go to your service provider's stores with an official proof of identity (passport or identity card) and do the change. Upon changing, your previous sim immediately loses service

[callalex]

United States services are fundamentally broken in this way because there is literally no unified identification system for the United States. There are identity systems for most US states, but there are 50 of those and the requirements and features vary widely which makes it a nightmare to build on top of them.

[theragra]

In some more corrupt countries in EU, clerks can be bribed, unfortunately