What Is WiFi Calling | UK Mobile Guide

Does your network support WiFi calling?

Step	Action	What It Fixes
1	Check your network status	Confirms if issue is network-wide
2	Toggle aeroplane mode on/off	Re-registers SIM on your network
3	Restart your phone	Clears temporary network errors
4	Check your network APN settings	Fixes incorrect data configuration
5	Re-insert SIM card	Fixes poor SIM contact issues
6	Contact your network support	Resolves account or SIM faults

Publishing order: 481 • Cluster 42: Advanced Authority

If your internet connection is slow or mobile data is not working properly, this What Is WiFi Calling | UK Mobile guide will help you configure everything correctly.

This guide addresses UK setup problems, covering configuration, signal and data.

This What Is WiFi Calling guide explains the common causes, the safest settings to check, and the simple fixes to try first. It is written for UK mobile network users who need a fast internet setup, correct SIM settings, roaming settings, cellular data, MMS settings and reliable 4G or 5G service.

Whether it's no service, slow data, hotspot issues, a blocked SIM, roaming faults or a bad APN, start with the steps below.

Cycling power and waiting a moment for the network to reconnect often solves it.

Confirm SIM activity alongside data/roaming being enabled per the plan's terms.

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Troubleshooting checklist

Take them in turn — step two covers most situations

Step 1Check APNStep 2Select APNStep 3Toggle flight modeStep 4Restart phoneStep 5Test data

Enabling your network WiFi calling on iPhone

Check the APN entry via Mobile Network or Cellular Data, save, reboot the phone, and confirm browsing, MMS and hotspot function.

Internal guides to check next

UK APN Settings Troubleshooting Why Is My Mobile Data Not Working How to Reset APN Settings What Are APN Settings APN Settings Explained What Is eSIM and How It Works How Roaming Works Back to full blog order

Frequently Asked Questions About What Is WiFi Calling

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.