Complete step-by-step guide to fix Tesco Mobile top-up problems. Solve voucher errors, payment failures, and credit not appearing on your account.
Follow these steps in order to resolve your Tesco Mobile top-up issue
Start with these simple solutions that fix most top-up problems
Ensure you've entered the 16-digit voucher code correctly. Tesco Mobile top-up codes should be entered without spaces, dashes, or other characters.
If one method isn't working, try an alternative approach to add credit to your Tesco Mobile account.
Dial *150# from your Tesco Mobile and follow the instructions
Use the official Tesco Mobile app available on iOS and Android
Visit tescomobile.com and log into your account
Visit any Tesco store with a PayPoint terminal
Ensure you have a stable internet connection or mobile signal to complete the top-up process successfully.
Some top-ups can take up to 24 hours to appear on your account, though they're usually instant.
Check your balance by dialing *150# from your Tesco Mobile or via the Tesco Mobile app.
Select your top-up method for tailored troubleshooting instructions
If basic steps didn't work, try these advanced troubleshooting methods
Ensure your Tesco Mobile account is active and in good standing. Accounts with outstanding issues may not accept top-ups.
If topping up via website, clear your browser's cache and cookies which can sometimes cause payment processing issues.
Chrome: Settings > Privacy and security > Clear browsing data
Safari: Settings > Safari > Clear History and Website Data
Firefox: Options > Privacy & Security > Cookies and Site Data > Clear Data
Attempt the top-up using a different device or network connection to isolate the issue.
Tesco Mobile's top-up systems may occasionally experience technical difficulties.
Check Tesco Mobile Service StatusAlso check Tesco Mobile's social media accounts for any reported top-up system issues.
"I kept getting 'invalid voucher' errors until I realized I was adding dashes between the numbers. Following the guide here, I entered the code without spaces and it worked immediately!"
- Michael T., Manchester
If our troubleshooting guide didn't solve your problem, try these additional resources
For persistent top-up issues, contact Tesco Mobile customer service directly with your transaction details.
Your top-up problem might be related to other common Tesco Mobile issues.
For hands-on assistance with voucher or payment issues, visit a Tesco store with a mobile department.
Our experts can provide personalized assistance for your specific Tesco Mobile top-up issue