Which of the following is NOT true regarding cellular Internet service?

The statement that cellular Internet service is available in all areas without any limitations is not true. Cellular Internet service relies on a network of cell towers that provide coverage to specific geographic areas. These areas can vary in size and may experience gaps in coverage, especially in rural or remote locations where cell towers are less densely populated. Additionally, the quality and speed of the service can be affected by factors such as network congestion, the distance from the tower, and environmental obstacles.

In contrast, the other statements are accurate. Cellular Internet does use radio waves to transmit signals, which is fundamental to how mobile networking operates. Data packages often come with specified limits for uploading and downloading, as service providers typically impose caps to manage network resources and ensure fair usage for all users. Lastly, smartphones can indeed function as Wi-Fi hotspots, allowing users to share their cellular data connection with other devices. This feature enhances the versatility of mobile Internet usage but is dependent on the mobile plan and device capabilities.