I was a teenager when Switzerland introduced the mandatory ID check, in 2003 or 2004 iirc.

My carrier added 10 CHF credit to my prepaid plan for the trouble.

It's still fairly easy to buy a Lycamobile SIM/number that was enabled with a fake or stolen ID. Consequently some banks and services ban entire number ranges, which is not only ineffective but also affects people who committed the sin of keeping their first phone number even after moving to a proper postpaid plan...