What is the primary feature of the 'Contacts' section in app settings?

The primary feature of the 'Contacts' section in app settings is that it designates which applications can access contact information. This section is designed to give users control over their personal data, ensuring that only the apps they permit can view and use their contacts. By managing these permissions, users can protect their privacy and choose which apps have access to sensitive data on their devices. This is especially important for apps that may need to integrate contact functionality, such as messaging or social media apps, while still allowing users to maintain oversight of their information.

In this context, the other options do not accurately describe the function of the 'Contacts' section. Unlimited access to all apps would undermine user privacy and security. Disabling access to all third-party applications is overly restrictive and does not reflect the actual permissions model, which allows for selective access. Tracking contact usage statistics is not a primary function of the section, as the focus is on permission management rather than data analytics.