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SIM Card No Service Fix

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A step-by-step UK guide to SIM Card No Service Fix, covering setup steps, common causes, fixes, and related your UK netw

SIM Card No Service Fix guide thumbnail

What causes a phone to show no service

Step Action What It Fixes
1Check your network statusConfirms if issue is network-wide
2Toggle aeroplane mode on/offRe-registers SIM on your network
3Restart your phoneClears temporary network errors
4Check your network APN settingsFixes incorrect data configuration
5Re-insert SIM cardFixes poor SIM contact issues
6Contact your network supportResolves account or SIM faults

A handful of causes explain failing data, calls or texts: a bad APN, a nearby outage, a poorly seated SIM, or software issues — each fixed below.

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Troubleshooting checklist

Each fix here assumes the previous one was already tried, so stick to the order

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

SIM card checks for no service

Before changing anything, check the UK APN Hub or Downdetector for outages — settings won't help while an outage is ongoing.

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Troubleshooting checklist

These build on each other — stick to the order given

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

Network reset steps for no service

From the notification shade, switch Aeroplane Mode on for about ten seconds, then off, forcing a fresh reconnect to the nearest mast.

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Troubleshooting checklist

Each step assumes the one before it didn't work, so follow the sequence

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

When 'no service' means a hardware fault

Restarting fully (hold power, Restart) clears the modem cache and re-registers the SIM, fixing problems an aeroplane mode toggle misses.

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Troubleshooting checklist

The fixes are cumulative, so work through them in order

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

Step 4 — Re-seat the SIM card (SIM Card No Service)

With the phone off, eject the SIM tray, examine the gold contacts for corrosion, wipe gently, and reseat the card firmly before powering back on.

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Troubleshooting checklist

Every fix here builds on the last, so don't skip ahead

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

Step 5 — Check APN settings (SIM Card No Service)

An incorrect APN is a frequent cause of no data despite good signal — verify Settings → Mobile Network → Access Point Names against the UK APN Hub's figures.

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Troubleshooting checklist

These are meant to be tried in sequence, each assuming the last was tried

Step 1Check APNStep 2Select APNStep 3Toggle flight modeStep 4Restart phoneStep 5Test data
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Reset Network Settings will delete all saved Wi-Fi passwords
This step also removes all Bluetooth pairings and VPN profiles. Make a note of your Wi-Fi passwords before continuing. Only use this as a last resort after all other steps have failed.

Step 6 — Reset network settings for SIM Card No Service

Resetting network settings on Android (Settings → General Management → Reset → Reset Network Settings) restores APN defaults without touching apps or data.

The iPhone reset (Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings) restarts the device with default settings applied.

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Troubleshooting checklist

Stick to the order — each fix picks up where the last left off

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

Step 7 — Contact customer services for no-service faults

Not fixed yet? Your network's support team can help — it may be account, SIM or local network related. Keep the account number and IMEI (dial *#06#) handy.

Related guides

No Signal on iPhoneNo Signal on SamsungHow to Fix No Service on PhoneLyca APN Settings iPhoneMMS Not Sending on iPhoneBest APN Settings for RoamingLyca Internet Not Working5G Not Working on Samsung
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Troubleshooting checklist

Each entry assumes the previous one was attempted, so keep the sequence

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

Frequently Asked Questions About SIM Card No Service Fix

Why is your network mobile data not working?
your network mobile data may stop working due to an incorrect APN, a temporary network outage, an expired data plan, or a SIM issue. Follow the steps in this guide to identify and fix the cause.
How do I reset my your network APN settings?
On Android: go to Settings → Network → Mobile Networks → Access Point Names, then tap the menu and select 'Reset to default'. On iPhone: go to Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings.
Does your network have a network outage in my area?
Check your network website or their social media channels for real-time outage information. You can also check third-party sites like Downdetector for user-reported your network outages.
Why does your network show signal but no internet?
If your network shows signal but no internet, the APN settings may be incorrect or missing. Check the APN settings on your device and compare them to the correct your network values in our APN guide.
How long does a your network outage usually last?
Most your network outages are resolved within a few hours. For planned maintenance, your network usually notifies customers in advance. Check your network status page for current updates.