We secure your account against SIM swaps…with modern cryptography protocols.

This just dosent make ANY sense. Sim swaps are done via social engeneering.

See this for details. Their tech support people do not have the access necessary to move a line so there’s nobody to social engineer. Only the customer can start the process to move a line after cryptographic authentication using BIP-39.

proprietary signaling protection

If they wanted to be private, it would be Open source.

I’m really tired of this trope in the privacy community. Open source does not mean private. Nobody is capable of reviewing the massive amount of code used by a modern system as complex as a phone operating system and cellular network. There’s no way to audit the network to know that it’s all running the reciewed open source code either.

Voicemails can hold sensitive information like 2FA codes.

Since when do people send 2fa codes via voicemail? The fuck? Just use signal.

There are many 2FA systems that offer to call your number so the system can tell you your 2FA code.

The part where I share your reaction to Cape is about identifying customers. This page goes into detail about these aspects, and it has a lot of things that are indeed better than any other carrier out there.

But it’s a long distance short of being private. They’re a “heavy MVNO”. This means their customers’ phones are still using other carriers’ cell towers, and those can still collect and log IMSI and device location information. Privacy researchers have demonstrated that it is quite easy to deanonymize someone with very little location information.

On top of that, every call or text goes to another device. If it goes through another core network, most call metadata is still collected, logged, and sold.

If we accept all of Cape’s claims, it’s significantly better than any other carrier I’m aware of, but it’s still far from what most people in this community would consider private.