# Per-App Cellular Data Switches on iPhone: How It Works URL: https://byshahid.com/blog/per-app-cellular-data-switches-iphone/ App: Secret Codes: IMEI & Carrier (https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322) Author: Muhammad Shahid Updated: 2026-11-04 > Stop individual apps from using mobile data at all. Settings, Cellular has a list of every app that has ever used cellular data, with a switch for each and the amount it used underneath. Tap Show All to see the full list rather than the top few. Turn an app off and it will only work on Wi-Fi. - **What it does:** Stop individual apps from using mobile data at all. - **Published for:** any iPhone, Verizon, AT&T, T-Mobile and UScellular - **Type:** iOS setting Stop individual apps from using mobile data at all. This page explains what it does, how to use it on an iPhone and which carriers it applies to. I build **Secret Codes: IMEI & Carrier**, a free iPhone app with 317 checked codes and guides, including this one. If you would rather tap than memorise, [get Secret Codes on the App Store](https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322). ## What is Per-App Cellular Data Switches? Settings, Cellular has a list of every app that has ever used cellular data, with a switch for each and the amount it used underneath. Tap Show All to see the full list rather than the top few. Turn an app off and it will only work on Wi-Fi. This is the surgical alternative to Low Data Mode. If one video or backup app is eating your allowance, switching just that app off keeps everything else normal. Wi-Fi Assist sits in the same list as a service rather than an app. It is on by default and quietly switches to cellular when Wi-Fi is weak, which is a common explanation for data usage people cannot account for. ## How do I do it? - Open the Settings app. - Tap Cellular. - Scroll to the app list and tap Show All. - Turn off the switch beside any app you want restricted to Wi-Fi. ## Which carriers does this apply to? | Published for | any iPhone, Verizon, AT&T, T-Mobile and UScellular | | Type | iOS setting | | Good to know | Available on iOS 17, 18 and 26 on every iPhone with a cellular plan. | _Screenshot: The Secret Codes detail screen shows the steps, the carriers and an Open in Phone button._ ## Related iphone phone and message settings - [Turn iMessage Off Before Leaving iPhone](/blog/turn-imessage-off-before-leaving-iphone/) - [System Services Data And Reset Statistics](/blog/system-services-data-and-reset-statistics-iphone/) - [Screen Unknown Senders In Messages](/blog/screen-unknown-senders-in-messages-iphone/) - [Cellular Data Network And APN](/blog/cellular-data-network-and-apn-iphone/) - [Send As Text Message Fallback](/blog/send-as-text-message-fallback-iphone/) - [5G Standalone And Voice Over 5G SA](/blog/5g-standalone-and-voice-over-5g-sa-iphone/) See all [iphone phone and message settings](/blog/iphone-codes/phone-settings/) or [every category of iPhone codes](/blog/iphone-codes/). ## How Secret Codes helps Secret Codes keeps this and every other entry a search away. Pick your carrier once and each entry says whether it is published for your line. You can save favourites, add a private note, and record whether a code worked on your line. **Secret Codes: IMEI & Carrier** is free on the App Store: https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322 ## FAQ ### What is Per-App Cellular Data Switches on iPhone? Stop individual apps from using mobile data at all. Settings, Cellular has a list of every app that has ever used cellular data, with a switch for each and the amount it used underneath. Tap Show All to see the full list rather than the top few. ### What else should I know about Per-App Cellular Data Switches? Turn an app off and it will only work on Wi-Fi. This is the surgical alternative to Low Data Mode. If one video or backup app is eating your allowance, switching just that app off keeps everything else normal. Wi-Fi Assist sits in the same list as a service rather than an app. ### What are the steps for Per-App Cellular Data Switches? 1. Open the Settings app. 2. Tap Cellular. 3. Scroll to the app list and tap Show All. 4. Turn off the switch beside any app you want restricted to Wi-Fi. ### Where do I find Per-App Cellular Data Switches? In the Settings app on your iPhone. ### Is there a dial code for Per-App Cellular Data Switches? No. On iPhone this is not a dial code, so you use the steps on this page instead. ### Which carriers does Per-App Cellular Data Switches work on? It is published for any iPhone, Verizon, AT&T, T-Mobile and UScellular. Available on iOS 17, 18 and 26 on every iPhone with a cellular plan. ### Does Per-App Cellular Data Switches work on Android phones too? These steps are for iPhone. Android phones have their own menus. ### Will Per-App Cellular Data Switches work outside the US? The iPhone steps stay the same, although some features depend on your carrier and region. ### What if Per-App Cellular Data Switches does not work on my iPhone? Check that it applies to your carrier first, because carriers decide which services they offer and can change them. If it should apply to your line, contact your carrier. ### What is related to Per-App Cellular Data Switches? Turn iMessage Off Before Leaving iPhone. Stop texts vanishing into iMessage when you move to a non-Apple phone. ### What else is in this category? System Services Data And Reset Statistics. See what iOS itself used, and reset the counters that never reset on their own. ### Can I find Per-App Cellular Data Switches in an app? Yes. Secret Codes, a free iPhone app, includes it with its steps and carrier details. ## Sources - [Apple Support: iPhone User Guide](https://support.apple.com/guide/iphone/welcome/ios)