iPhone (iOS) · System Info
Check Your Carrier and SIM Details
The Carrier entry (and the Carrier section under General → About) shows which cellular carrier your SIM or eSIM is currently registered with, along with the installed Carrier Settings update version.
How to open Carrier
- Open Settings → General → About and look for the Carrier entry.
- Check the currently installed Carrier Settings version listed there.
- If prompted, install any available carrier settings update.
- For dual-SIM setups, check each line's carrier info separately if needed.
What you should know
- Displays your current carrier's name as recognized by the SIM or eSIM.
- Shows the Carrier Settings version, which controls things like network names, voicemail, and hotspot behavior.
- Prompts to update Carrier Settings appear automatically when your carrier releases a new version.
- Dual-SIM iPhones show carrier info separately for each active line.
Carrier Settings updates are separate from iOS updates and are pushed by your specific carrier, not by Apple directly.
Why it matters
Carrier issues — no signal, hotspot not working, visual voicemail broken — are frequently fixed simply by installing a pending Carrier Settings update, making this one of the fastest troubleshooting checks for cellular problems. Knowing where to check the carrier name and version also helps quickly confirm you're on the right network after switching SIMs or carriers.
Best practices
- Install Carrier Settings updates promptly when prompted, since they often resolve network-specific bugs.
- Check this info first when troubleshooting hotspot, voicemail, or signal problems before assuming it's a hardware issue.
- Confirm the right carrier is shown here after inserting a new SIM or activating a new eSIM.
Common problems and fixes
- No prompt appears for a Carrier Settings update even though issues persist
- Restart the iPhone and ensure it has cellular or Wi-Fi connectivity, since the update check happens automatically and silently in the background.
- Carrier name shows as 'No Service' or a generic label instead of the real carrier
- Reseat the physical SIM card or reset the eSIM's cellular plan, and confirm the account is active with the carrier directly.
Tips and tricks
- If a Carrier Settings update seems stuck, toggling Airplane Mode on and off can sometimes trigger the check again immediately.
Frequently asked questions
Are Carrier Settings updates the same as iOS updates?
No, Carrier Settings updates are small, carrier-specific configuration files pushed independently of full iOS software updates.
Do I need to do anything after switching to a new carrier?
Usually the correct carrier name and settings appear automatically after activation, but installing any prompted Carrier Settings update helps ensure full compatibility.
Related settings
- CellularCellular settings control your mobile data connection, including which apps can use cellular data, whether 5G or data roaming is allowed, and how much of your monthly plan each app has consumed.
- System Diagnostics InfoThe About screen under General is the definitive source for an iPhone's exact model name/number, serial number, IMEI/MEID, modem firmware version, and other identifiers often needed for support, insurance, or trade-in.
- General & AboutThe About screen lists identifying and technical details about your iPhone — name, iOS version, model and serial numbers, storage capacity, and carrier information — that support staff and other apps often need.
More System Info guides for iPhone (iOS)
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- Legal & RegulatoryLegal & Regulatory, tucked under General, lists the legal notices, open-source license acknowledgments, and regulatory certification numbers (like FCC ID) tied to your specific iPhone model.
- Model, Serial Number & IMEISettings > General > About lists the exact model name and number, serial number, and IMEI/MEID identifiers needed for warranty checks, carrier activation, and insurance claims.
- Certificate Trust SettingsCertificate Trust Settings lets users enable or disable full trust for root certificates that were manually installed via a configuration profile, separate from Apple's built-in trusted certificate list.
- VPN & Device ManagementThis screen lists any VPN configuration profiles and shows whether the iPhone is enrolled in a Mobile Device Management (MDM) system, typically used by employers or schools to manage company- or school-owned devices.
- iPhone Device NameThe device name is what appears to others over AirDrop, Bluetooth pairing, and on the local Wi-Fi network, and can be personalized separately from the Apple ID name.