# System Services Data And Reset Statistics on iPhone: How It Works URL: https://byshahid.com/blog/system-services-data-and-reset-statistics-iphone/ App: Secret Codes: IMEI & Carrier (https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322) Author: Muhammad Shahid Updated: 2026-11-04 > See what iOS itself used, and reset the counters that never reset on their own. Above the app list in Settings, Cellular there is a System Services entry. Tap it and you get a breakdown of what iOS used data for behind the scenes, things like messaging services, software updates and time and location lookups. - **What it does:** See what iOS itself used, and reset the counters that never reset on their own. - **Published for:** any iPhone, Verizon, AT&T, T-Mobile and UScellular - **Type:** iOS setting See what iOS itself used, and reset the counters that never reset on their own. 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 System Services Data And Reset Statistics? Above the app list in Settings, Cellular there is a System Services entry. Tap it and you get a breakdown of what iOS used data for behind the scenes, things like messaging services, software updates and time and location lookups. These cannot be switched off individually, but seeing them explains usage that no app accounts for. The other half of this screen is the Current Period counter and its roaming companion. Neither one resets automatically at the start of your billing cycle, which is why so many people see numbers that look impossibly large. Scroll to the very bottom and tap Reset Statistics to zero them. The habit worth forming is to reset on the day your carrier's billing cycle starts. That turns a meaningless running total into a usable estimate. Apple still advises checking with your carrier for the authoritative figure. ## How do I do it? - Open the Settings app. - Tap Cellular. - Tap System Services above the app list to see the breakdown. - Scroll to the bottom and tap Reset Statistics on the first day of your billing cycle. ## 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 dual SIM the figures shown are for the currently selected cellular data line. | _Screenshot: The Secret Codes detail screen shows the steps, the carriers and an Open in Phone button._ ## Related iphone phone and message settings - [Per-App Cellular Data Switches](/blog/per-app-cellular-data-switches-iphone/) - [Cellular Data Network And APN](/blog/cellular-data-network-and-apn-iphone/) - [Turn iMessage Off Before Leaving iPhone](/blog/turn-imessage-off-before-leaving-iphone/) - [5G Standalone And Voice Over 5G SA](/blog/5g-standalone-and-voice-over-5g-sa-iphone/) - [Screen Unknown Senders In Messages](/blog/screen-unknown-senders-in-messages-iphone/) - [Allow More Data On 5G](/blog/allow-more-data-on-5g-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. This entry is part of Secret Codes Pro. **Secret Codes: IMEI & Carrier** is free on the App Store: https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322 ## FAQ ### What is System Services Data And Reset Statistics on iPhone? See what iOS itself used, and reset the counters that never reset on their own. Above the app list in Settings, Cellular there is a System Services entry. ### What else should I know about System Services Data And Reset Statistics? Tap it and you get a breakdown of what iOS used data for behind the scenes, things like messaging services, software updates and time and location lookups. These cannot be switched off individually, but seeing them explains usage that no app accounts for. ### What are the steps for System Services Data And Reset Statistics? 1. Open the Settings app. 2. Tap Cellular. 3. Tap System Services above the app list to see the breakdown. 4. Scroll to the bottom and tap Reset Statistics on the first day of your billing cycle. ### Where do I find System Services Data And Reset Statistics? In the Settings app on your iPhone. ### Is there a dial code for System Services Data And Reset Statistics? No. On iPhone this is not a dial code, so you use the steps on this page instead. ### Which carriers does System Services Data And Reset Statistics work on? It is published for any iPhone, Verizon, AT&T, T-Mobile and UScellular. Available on iOS 17, 18 and 26. On dual SIM the figures shown are for the currently selected cellular data line. ### Does System Services Data And Reset Statistics work on Android phones too? These steps are for iPhone. Android phones have their own menus. ### Will System Services Data And Reset Statistics work outside the US? The iPhone steps stay the same, although some features depend on your carrier and region. ### What if System Services Data And Reset Statistics 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 System Services Data And Reset Statistics? Per-App Cellular Data Switches. Stop individual apps from using mobile data at all. ### What else is in this category? Cellular Data Network And APN. The hidden carrier configuration screen, when your carrier lets you see it. ### Can I find System Services Data And Reset Statistics in an app? Yes. Secret Codes, a free iPhone app, includes it with its steps and carrier details, as part of Secret Codes Pro. ## Sources - [Apple Support: iPhone User Guide](https://support.apple.com/guide/iphone/welcome/ios)