iPhone users can have various reasons for not wanting to use their cellular data. It could be that they just want to connect to available Wi-Fi networks and save their device’s battery. Or they want to sparingly use their cellular data and not go over the data limit of the plan. Whatever the reason, turning off the cellular data on your iPhone is very simple. Just follow these steps and you are all set!
1. Tap on the Settings app on your iPhone springboard.
2. Tap on Cellular.
3. Tap on the green slider for Cellular Data to move it to the left. Cellular Data will get turned off.