How do I contact your network UK support?

You can contact your network UK customer support through their official website, via live chat, by phone, or through their social media channels.

How do I check my your network signal strength?

Check your phone's signal bars in the status bar. For a detailed reading, go to Settings → About Phone → Status (Android) or dial *3001#12345#* (iPhone) to open Field Test mode.

What should I do if your network has no service?

If your network shows no service, try toggling Aeroplane Mode on and off, restarting your phone, and checking your network coverage map for your area. If the issue persists, contact your network support.

How do I keep my number when switching to your network?

To keep your number when switching to your network, request a PAC code from your current provider by texting 'PAC' to 65075. You can then give this code to your network when you set up your new account.

Does your network support WiFi calling?

Many your network plans support WiFi calling. Check your network account settings or your network website to see if WiFi calling is available on your plan and how to enable it.

Carrier Settings Update iPhone 2026

A carrier settings update on iPhone pushes new APN, MMS, VoLTE and network configuration settings from your mobile network directly to your phone. They are small, automatic updates that keep your iPhone working correctly with your UK carrier's latest network settings.

What Is a Carrier Settings Update on iPhone?

A carrier settings update is a configuration package pushed by your UK mobile network (EE, O2, Vodafone, Three, or any MVNO) to your iPhone. It contains:

APN settings — the access point values your iPhone uses for mobile data and MMS
MMS configuration — MMSC address, proxy and port for picture messaging
VoLTE settings — Voice over LTE configuration for HD calling
Wi-Fi Calling settings — whether your carrier supports Wi-Fi calling and how to configure it
Visual Voicemail settings — carrier-specific voicemail configuration
Roaming configuration — data roaming APN and settings for international travel

Carrier settings are separate from iOS updates. You can have the latest iOS version and still have outdated carrier settings — both need to be current for your phone to work correctly with your network.

How to Update Carrier Settings on iPhone

Method 1: Settings › General › About (recommended)

Connect your iPhone to Wi-Fi or mobile data.
Go to Settings › General › About.
Wait 10–15 seconds. If an update is available, a pop-up will appear: "Carrier Settings Update — An update is available for the carrier settings on your iPhone."
Tap Update to install it. The update takes a few seconds and does not require a restart.
After updating, toggle Aeroplane Mode on for 15 seconds then off to apply the new settings.

Method 2: Via iTunes / Finder (if no update appears)

Connect your iPhone to a computer via USB.
Open iTunes (Windows) or Finder (Mac).
Select your iPhone and click Check for Update or Restore.
iTunes/Finder checks Apple's servers for the latest carrier bundle for your network.

Tip: The carrier settings update pop-up appears automatically when you insert a SIM from a network with a newer bundle available. If no pop-up appears at Settings › About, your carrier settings are already up to date.

What Changes After a Carrier Settings Update?

After updating, your iPhone automatically applies new network configuration. You may notice:

Mobile data working where it previously didn't (new APN applied)
MMS/picture messaging fixed (updated MMSC settings)
VoLTE (HD Voice) newly available or improved
Wi-Fi Calling enabled or updated
Visual Voicemail working correctly
Better roaming performance abroad

The update does not delete personal data, apps, or settings.

What If the Carrier Settings Update Fails?

If the update fails or the pop-up disappears before you can accept it:

Ensure you have a stable Wi-Fi or data connection and retry Settings › General › About.
Restart your iPhone and check again — sometimes a restart clears a stuck update prompt.
Remove and reinsert the SIM card — reinserting the SIM can trigger the carrier update prompt to reappear.
Connect to iTunes or Finder on a computer and check for carrier updates via the desktop route.
If no update appears and your network features are not working correctly, contact your carrier — they may need to re-provision your SIM or push the carrier bundle manually.

Troubleshooting After a Carrier Settings Update

If mobile data or MMS is still not working after updating carrier settings:

Toggle Aeroplane Mode on for 30 seconds then off to force the new settings to apply.
Restart your iPhone fully.
Go to Settings › Mobile Data › Mobile Data Network and verify the APN field shows the correct value for your network. (On some iPhones this field is greyed out — that means the carrier bundle controls it automatically.)
If the APN field is present and empty after the update, enter your network's correct APN value manually.
Reset Network Settings if problems persist: Settings › General › Transfer or Reset iPhone › Reset › Reset Network Settings. Then re-check carrier settings at General › About.

Frequently Asked Questions About Carrier Settings Update iPhone

What does a carrier settings update do on iPhone?

A carrier settings update pushes new APN, MMS, VoLTE, Wi-Fi Calling, roaming and voicemail configuration from your mobile network to your iPhone. It ensures your phone is using the most current network settings for your UK carrier. Updates are small and fast — they do not affect your personal data or apps.

How do I check for a carrier settings update on iPhone?

Go to Settings › General › About and wait 10–15 seconds. If an update is available, a pop-up prompt will appear. Tap Update to install it. If no prompt appears, your carrier settings are already current. You can also check by connecting to iTunes or Finder on a computer.

Will a carrier settings update fix my mobile data?

It can. If mobile data stopped working after an iOS update or SIM change, a carrier settings update often restores the correct APN configuration and fixes the problem. Go to Settings › General › About to check for an available update. After installing, toggle Aeroplane Mode to apply the new settings.

Does the carrier settings update require Wi-Fi?

You need either Wi-Fi or mobile data to receive the update over the air. If your mobile data is not working (which is often why you need the update), connect to Wi-Fi first, then go to Settings › General › About. Alternatively, connect to a computer via USB and use iTunes or Finder to update carrier settings without needing a data connection.

How often do carrier settings update?

Carrier settings updates are released by your network whenever they update their APN, VoLTE, Wi-Fi Calling or roaming configuration — typically a few times per year. There is no fixed schedule. iOS checks automatically when you go to Settings › General › About or when you insert a new SIM.