I wouldn't trust most hardware vendors with my wifi password, let alone access to my phone's messages. Hardware vendors have shown time and time again that they don't care about privacy or security. All they care about is shipping their widget and getting you to buy it, and to do that, they will cut corners, ship defective firmware, use easily guessed default passwords, and turn a blind eye to abuse.

As a hardware vendor, you'd achieve "trusted" status by having a decades-long track record of not doing these things.