Apple Certified Support Professional Practice Test

When a device is unable to connect to a cellular network, it may display messages that indicate the status of its network connection. "No Service," "Searching," "SOS Only," or simply "SOS" are specific notifications users can encounter.

"No Service" signifies that the device cannot find a cellular signal at all. "Searching" indicates that the device is actively looking for a viable network connection. "SOS Only" means that while normal cellular services are unavailable, the device can still connect to emergency services. This mix of messages effectively communicates various stages of connectivity issues that users might experience.

In contrast, the other choices do not accurately describe the nature of cellular connectivity problems as seen on devices. "No Internet Connection" usually pertains to a wireless network issue rather than a cellular one. "Network Error" is a more generic term that does not specifically convey the GPS or online connectivity aspects of cellular networks. "Signal Lost" is less commonly displayed and does not encompass the different statuses a device may exhibit when it cannot connect to a cellular network.