Grabbing phones of people also means it doesn’t matter if they display messages or not if you have the SIM you don’t need their device. This isn’t any differen

Grabbing phones of people also means it doesn’t matter if they display messages or not if you have the SIM you don’t need their device. This isn’t any different than stealing a ubikey of someone it’s game over. Also at least in the U.K. it’s pretty hard to get a replacement SIM through social engineering you either need an ID in store or they send it to your billing address only with signed post. In either case the previous SIM would be disabled on the spot which would likely mean that the owner would notice and block it before this can be leveraged for an attack and this is also less scalable than stealing phones since it’s actually more involved in most cases.