TinCan owner here. The issue with landlines in my experience is that they quickly become overwhelmed with spam calls. That and the ability to lock down the phone to just a few numbers is the appeal.
Mine, in Spain, is surprisingly free of spam. I receive spam on my mobile phone, which is often blocked by Android, but I don't receive spam on my landline. Strange, isn't it?
Mine, in Spain, is surprisingly free of spam. I receive spam on my mobile phone, which is often blocked by Android, but I don't receive spam on my landline. Strange, isn't it?