You can prevent iTunes and the App Store from downloading content without Wi-Fi access. To do so, go to Settings > iTunes & App Store and toggle off Use Cellular Data.

iOS apps can update in the background, fetching new content while they are not in use. This means that when you return to the app, you will see the latest news and updates. You can disable this feature completely by going to Settings > General > Background App Refresh. Alternatively, you can choose which apps can update in the background by selecting them from the list below.

Go to Settings > Cellular to find out which apps are consuming the most data. Here, you can see the amount of data used by each app in the current billing period and turn off any app that is using more data than it should.

Wi-Fi Assist helps your iPhone to switch to cellular data when the Wi-Fi signal is weak, preventing the slow loading of pages. But, if you are at the edge of a Wi-Fi network, it may use more cellular data and increase charges. To turn it off, go to Settings > Cellular and turn off Wi-Fi Assist.

Streaming music or podcasts without Wi-Fi can increase data usage. Most apps allow restricting streaming to Wi-Fi only. Download playlists or podcasts beforehand to avoid streaming over cellular data. Examples: Apple Music, and Apple Podcasts.

To adjust your Apple Music streaming settings, go to Settings > Music. In the Streaming & Downloads section, turn off “Use Cellular Data” if you don’t want to stream music via a cellular connection. Alternatively, leave this setting on and turn off “High Quality on Cellular” to stream songs at a lower bit rate when you’re not connected to Wi-Fi.

Low Data Mode is a feature that reduces data consumption on devices running iOS 13 or newer. The feature achieves this by suspending data-heavy processes like automatic updates & downloads, data synchronization, and other background tasks.

Low Data Mode may reduce the quality of streaming content. Follow the steps below to turn on Low Data Mode for cellular data on your iPhone.

Go to Settings and tap Cellular (or Mobile Data).

Select Cellular Data Options (or Mobile Data Options).

Toggle on Low Data Mode.

Review the apps using mobile data and disable data access for apps that are not frequently used.

Go to Settings > Cellular (or Mobile Data) and scroll to the “Cellular Data” section.

Use Wi-Fi for data sync. Don’t use cellular to share iCloud files unless you have an unlimited plan. Check settings to ensure the iPhone isn’t transferring iCloud files via cellular. Open Settings, tap Cellular, scroll down, and toggle off iCloud Drive.

When you link multiple devices to your Apple ID, updates and syncing use a lot of data. This can lead to automatic downloads of apps and purchases. Additionally, the App Store may update apps using cellular data in the background.

To prevent automatic downloads on your App Store using mobile data, follow these steps: Open Settings and tap on App Store. Then, under Cellular Data, turn off Automatic Downloads. After that, select App Downloads and choose either “Always Ask” or “Ask If Over 200 MB”. Additionally, to avoid automatic video playback, turn off Video Autoplay or select the option “Wi-Fi Only”..

For Photos: Open Settings > Photos > Cellular Data and turn off Cellular Data.

To save your cellular data, check your messaging apps’ settings and ensure automatic media downloads happen only over Wi-Fi. In WhatsApp, go to Settings > Storage and Data and set “Media Auto-Download” to Wi-Fi for all media types. Also, turn on “Use Less Data for Calls” to reduce data consumption for voice and video calls.