"Download using cellular" refers to the process of transferring files, apps, or media from the internet to your device using your (like 5G, 4G, or LTE) rather than a Wi-Fi connection .
When your phone or tablet is not connected to a Wi-Fi network, it uses a network of cell towers to transmit data wirelessly. Enabling "download using cellular" allows your device to:
Download apps, stream music, or update system software while on the go.
Seamlessly transition from Wi-Fi to cellular without interrupting active downloads (if features like Wi-Fi Assist are on).