Apple Certified Support Professional Practice Test

To activate a new iOS or iPadOS device, connecting to a Wi-Fi network is essential because the activation process requires an internet connection. When a new device is powered on for the first time, it prompts the user to connect to a Wi-Fi network to access Apple's servers for the activation procedure. This connection allows the device to authenticate and register with Apple's services, ensuring that the device is recognized and can be used.

While connecting via cellular network or USB might also allow for activation under certain conditions, these are not the primary or most straightforward methods. For instance, a cellular connection may not be available if the device is Wi-Fi-only, and USB connections typically serve purposes like data transfer rather than initial activation. Connecting to a Bluetooth network is usually irrelevant in the activation context, as Bluetooth is not needed to access the activation servers. Thus, the primary and most effective means for activating a new iOS or iPadOS device is through a Wi-Fi network.