Nope, I read The Register (UK based) and they've had scandals from celebrities having their confidential SMS messages leaked; SMS spoofing; I think they even have SIM cloning going on every now and then in UK and some European countries. (since The Register is a tech site, my recollection is some carriers took technical measures to prevent these issues while quite a few didn't.)
I don't think it's a thing that happens that often in UK etc.; but, it doesn't happen that frequently in the US either. It's just a thing that can potentially happen.
Its also been a problem in Australia, Optus (2nd biggest teleco) used to allow number porting or activating sim against an existing account with a bare minimum of detail - Like a name, address and date of birth. If you had those details of a target you could clone their SIM and crack any SMS based MFA.
I don’t know about other parts, but here in France SMS is a shitshow. I regularly fail to receive them even though I know I have good reception.
This happened the other day while I was on a conference call with perfect audio and video using my phone’s mobile data.
A few weeks back, had some shop which sends out an SMS to inform you the job’s done tell me this is usually hit and miss when I complained about not hearing from them.
Many single radio phones can either receive sms/calls, or transmit data.
My relative owns such a device and cannot use internet during calls or receive/make calls during streaming like YT video playback.
In my case this is an iPhone 14 pro. I'm pretty sure I can receive calls while using data, since I often look things up on the internet while talking to my parents.
And, by the way, the SMS in question never arrived. I don't know if there's some kind of timeout happening, and the network gives up after a while. Some 15 years ago I remember getting texts after an hour or two if I only had spotty reception. This may of course have changed in the meantime, plus this is a different provider.
SMS is not E2E encrypted, so for all intents is just a plain text message that can/has been snooped. Might as well just send a plaintext emails as well.
I recently had an issue with a sim card and went to phone store that gave me a new one and disabled the old. They're supposed to ask for ID, but often doesn't bother. This is true for pretty much every country. Phone 2FA is simply completely insecure.