What does full device encryption primarily provide?

Full device encryption primarily provides complete protection of data through encryption. When a device is fully encrypted, all the data stored on it is scrambled and can only be accessed by someone who possesses the correct credentials, such as a password or encryption key. This means that even if the device is lost or stolen, the information contained within it remains secure and unreadable to unauthorized users.

Encryption protects sensitive information from potential threats, ensuring that personal data, financial records, and confidential communications remain confidential. This layer of protection is especially important in today's digital world, where data breaches and cyberattacks are increasingly common.

The other options relate to different features or outcomes not associated with full device encryption. For instance, accessibility without restrictions contradicts the purpose of encryption, which is to restrict access to only authorized users. Increased battery life and faster access to applications are not direct benefits of encryption; in fact, the encryption process may introduce some performance overhead, affecting speed and potentially battery usage, but this is outweighed by the critical need for security.