Tap and select Allow More Data on 5G . This setting explicitly enables iOS updates over cellular when Wi-Fi is unavailable. For 4G/LTE iPhones: Navigate to Settings > General > Software Update . If an update is available, tap Download and Install .
If prompted with a warning about using mobile data, select or Use Mobile Data to proceed with the download. Requirements and Limitations iphone download software update with mobile data
To download software updates using your cellular plan, you must ensure your device is configured to allow high data usage over mobile networks. Open Settings and tap Cellular (or Mobile Data ). Select Cellular Data Options . Tap and select Allow More Data on 5G
Before starting a large download, verify your device meets these technical requirements to avoid installation failures: How To Update iOS 26 With Mobile Data If an update is available, tap Download and Install
Downloading a update using mobile data is possible for most modern iPhones, especially those with 5G capabilities . While older iOS versions strictly required Wi-Fi for multi-gigabyte downloads, current versions allow you to bypass this restriction by adjusting your cellular data settings or leveraging high-speed 5G networks. Enabling Updates Over Mobile Data