Cape is a privacy-first mobile carrier based in the United States, designed to address the inherent security vulnerabilities of traditional cellular networks. Recognizing that commercial cellular infrastructure was built primarily for interoperability rather than security, Cape has developed its own cloud-based mobile core. This allows the company to operate as a modern mobile virtual network operator (MVNO) that maintains control over signaling, policy, and data handling, rather than relying solely on the legacy systems of established telecom providers. By managing its own mobile core, Cape provides a significantly higher layer of protection against tracking, surveillance, and data exploitation.

Functionality of the service centers on minimizing data collection from the point of connection. Unlike standard carriers that generate detailed behavioral profiles to sell to advertisers or share with data brokers, Cape operates on a principle of data minimization, refusing to sell customer information and deleting records as quickly as possible. The service provides nationwide 5G and 4G coverage by partnering with existing domestic infrastructure while routing all traffic through its own secure core, effectively insulating the user from many of the risks associated with roaming on third-party networks.

Some of the key features are:

• Minimal Data Collection: The service intentionally avoids collecting unnecessary personal information, such as social security numbers or home addresses, and does not sell user data to third parties.
• Identifier Rotation: The carrier automatically rotates the user's International Mobile Subscriber Identity (IMSI) every 24 hours, making it difficult for surveillance firms or rogue cell towers to track device activity over time.
• SIM Swap Protection: User identities are secured by private keys generated during sign-up, ensuring that numbers cannot be transferred to different devices without valid cryptographic authorization.
• Network Lock: A proprietary signaling proxy verifies the physical location of the device against the network it is attempting to attach to, blocking suspicious or anomalous connections.
• Encrypted Voicemail: All voicemails are encrypted upon arrival, with the decryption key stored exclusively on the user’s device, ensuring privacy even from Cape’s backend systems.
• Secondary Numbers: Subscribers receive two additional last-mile encrypted SMS numbers to use for sign-ups, shopping, or two-factor authentication, helping to keep their primary number private.
• Secure Global Roaming: International travel is secured by routing data traffic back through the company’s U.S.-based mobile core, bypassing insecure foreign telecom networks.
• Disappearing Call Logs: The service automatically deletes call logs and metadata after 24 hours to prevent the construction of personal behavioral profiles.

Users access the service through the official Cape mobile app, which is required to manage security settings, generate cryptographic key pairs, and enable features like identifier rotation. The installation process is streamlined to allow users to bring their existing compatible device via eSIM or purchase a pre-configured device, such as a hardened Google Pixel with GrapheneOS. By operating its own mobile core, Cape ensures that signaling information is protected and that user metadata remains private throughout the session.

Some common use cases include:

• Privacy-conscious consumers: Individuals seeking to reduce their digital footprint and prevent telecommunication companies from tracking their daily movements and habits.
• Journalists and activists: Protecting sensitive communications and physical locations from potential surveillance or targeted interception by adversarial actors.
• GrapheneOS users: Mobile users requiring a hardened operating system environment who need a carrier that supports advanced privacy configurations and prevents network-level tracking.
• Travelers: Maintaining secure, private internet access while traveling internationally by avoiding the vulnerabilities inherent in foreign local network infrastructures.