It's a combination of there not being that many companies that produce one and none of them being particularly open about it, and the carriers not wanting them to be because they're stodgy bureaucracies that don't like to be embarrassed when things make it easier for people to find security vulnerabilities in their networks.
So we're stuck with isolating it instead. At least you can make sure it has no access to your stored data, camera or microphone.
So we're stuck with isolating it instead. At least you can make sure it has no access to your stored data, camera or microphone.