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Tesco Mobile Problem Solver

Expert troubleshooting guides to fix Tesco Mobile issues fast. From network problems to top-up errors - find solutions with our step-by-step instructions.

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Network Issues

No signal, dropped calls, poor reception
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Top-Up Problems

Vouchers not working, payment issues
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Data Issues

Slow internet, data not working
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Phone Settings

APN settings, configuration problems

Tesco Mobile Troubleshooting Guides

Step-by-step solutions for common Tesco Mobile problems

Network & Connection Issues

Problems with signal, calls, or text messages

1

Check Signal Strength

Look at the signal bars on your phone. If they're low or showing "No Service", try moving to a different location.

Tip: Higher locations or near windows often have better reception.
2

Restart Your Phone

Turn your phone off completely, wait 30 seconds, then turn it back on. This often resolves temporary network issues.

3

Check for Network Outages

Visit the Tesco Mobile service status page to see if there are any known issues in your area.

Check Service Status
4

Manual Network Selection

Go to your phone's network settings and try manually selecting "Tesco Mobile" or "O2 UK" (Tesco Mobile uses O2's network).

Warning: Avoid selecting "Automatically choose network" if you're having connection issues.

Top-Up & Payment Issues

Problems adding credit to your Tesco Mobile account

1

Check Voucher Code

Ensure you've entered the voucher code correctly, without spaces or dashes. Tesco Mobile top-up codes are typically 16 digits.

2

Try Different Top-Up Methods

If one method isn't working, try an alternative:

  • Dial *150# and follow the instructions
  • Use the Tesco Mobile app
  • Top up online at TescoMobile.com
  • Visit a Tesco store with a PayPoint
3

Check Payment Card Details

If paying by card, ensure all details are correct and your card hasn't expired. Contact your bank if there are any payment blocks.

4

Wait for Processing

Top-ups can sometimes take up to 24 hours to appear on your account, though they're usually instant.

Still Not Working? Contact Us

Quick Fix Solutions

Try these general troubleshooting steps that solve many common Tesco Mobile issues

Restart Your Device

The simplest fix for many mobile issues. Turn your phone off and on again to clear temporary glitches.

How to: Hold the power button until the power menu appears, then select "Restart".

Check for Updates

Outdated software can cause compatibility issues. Ensure your phone's operating system is up to date.

Where to look: Settings > About Phone > Software Update

Reset Network Settings

If you're having connectivity issues, resetting network settings can often resolve them.

Note: This will erase saved Wi-Fi passwords and Bluetooth pairings.

Other Common Tesco Mobile Problems

Quick access to solutions for specific issues

No Service or Signal

Complete guide to fixing "No Service" errors on Tesco Mobile

Network Issue

Top-Up Not Working

Troubleshoot voucher and payment issues step-by-step

Payment Problem

Internet Not Working

Fix mobile data and internet connection problems

Data Issue

Calls Not Connecting

Solve call failure and dropped call issues

Call Problem

SIM Card Issues

Fix SIM not detected or recognized problems

Hardware Issue

Text Messages Failing

Solve SMS and MMS sending/receiving problems

Message Issue

Frequently Asked Questions

Why is my Tesco Mobile service not working?
There could be several reasons: network outage in your area, account issues, phone settings, or SIM card problems. Start with our basic troubleshooting steps above.
How do I check my Tesco Mobile balance?
Dial *150# from your Tesco Mobile phone and press call. Your balance will be displayed on screen. You can also check via the Tesco Mobile app or website.
My top-up hasn't appeared on my account - what should I do?
First, wait at least 24 hours as some top-ups can be delayed. If it still hasn't appeared, contact Tesco Mobile customer service with your top-up receipt.
How can I improve my Tesco Mobile signal?
Try moving to a higher location or near a window. Ensure your phone's software is updated. If signal is consistently poor, consider a signal booster or Wi-Fi calling.
Why is my data not working on Tesco Mobile?
Check if you have data allowance remaining. Try turning mobile data off and on again in settings. Ensure data roaming is disabled if you're in the UK.
How do I contact Tesco Mobile customer service?
You can call 4455 from your Tesco Mobile, or 0345 301 4455 from any other phone. The Tesco Mobile website also has live chat support.

Need More Help?

If our troubleshooting guides didn't solve your problem, get in touch with our support team.

Contact Our Support Team

Other Ways to Get Help

Official Tesco Mobile Support

For account-specific issues, contact Tesco Mobile directly:

  • Phone: 4455 (from your Tesco Mobile)
  • Phone: 0345 301 4455 (from any phone)
  • Website: tescomobile.com

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