7 Disable Cellular Data When on Wi-Fi
When your iPhone is connected to Wi-Fi, there’s no need to have Cellular Data enabled.
- Go to Settings.
- Tap Cellular.
- Then turn off the toggle for Cellular Data.
If you’re no longer connected to Wi-Fi, you can switch to Cellular Data and disable Wi-Fi. Just keep in mind that Cellular Data consumes more battery than Wi-Fi so use it only when required.