This Support section gives you clear steps for the most common mobile issues. You’ll find help for slow data, call problems, roaming, porting, voicemail, and device security. Each topic shows what you can do and explains how Mobifon can help if you still need support.
You’ll find links to live network coverage, recommended device settings, and how to contact Mobifon Support. Each answer helps you understand the issue, fix it fast, and know when to reach out for more help.
If you need help with network performance, SIM or account settings, using your phone abroad, or a lost or stolen device, you’ll find what you need here to keep your service working. For extra support, contact Mobifon.
I have a slow internet connection. How should I proceed?
First, use the links below to check the coverage of your network in real time. If your area typically has strong coverage, the problem is probably a temporary mast fault or scheduled maintenance.
If the internet is still slow:
My data isn’t working. What should I do?
Verify that your device has mobile data enabled and that Wi-Fi isn’t interfering. Your APN settings might not have been correctly downloaded if you recently changed networks or SIMs.
Mobifon can update your network’s data provisioning if the APN is accurate and data still fails.
Calls are failing or going straight to voicemail. How do I fix this?
This often happens due to network congestion, mast issues, or a barring setting on the account. Check:
Mobifon can check your account and report it to EE, Vodafone, O2, or Three if calls continue to fail.
Where can I see my exact network coverage?
Use the coverage pages:
Mobifon can also check your postcode and recommend a suitable solution.
I frequently experience internet outages on my mobile device. Why is this happening?
If your phone switches between 4G and 5G, data sessions may momentarily reset. Try:
If drops persist, Mobifon can request a mast-performance check from the network.
My voicemail isn’t working. How do I fix it?
Dial the correct voicemail number for your network:
If voicemail won’t activate or messages won’t download, Mobifon can reset your voicemail profile on the network.
How do I report a network outage to Mobifon?
Provide your postcode, handset model, and examples of failed calls/SMS/data sessions. Mobifon will run diagnostics, check the live mast status, and escalate to the network’s engineering team if needed.
How can I get in touch with Mobifon Support?
My phone says “SIM locked – enter PUK”. What do I do?
You have entered your SIM PIN incorrectly three times. Contact Mobifon, and we will provide your correct PUK code. Be advised that the SIM will be permanently disabled after ten unsuccessful PUK attempts.
My phone is overheating. Is this normal?
Overheating can occur during:
If your device is under warranty and overheats during everyday use, Mobifon can arrange a diagnostic or manufacturer repair.
Why are my text messages failing?
Confirm your SMSC (Message Centre Number) matches your network:
If the SMSC is correct, Mobifon can re-provision the messaging service on your account.
My picture messages (MMS) aren’t sending. How do I fix it?
MMS requires mobile data (not Wi-Fi). Also, ensure your APN includes MMS fields. Many business tariffs block MMS by default – Mobifon can enable it or recommend alternatives like RCS or WhatsApp.
My phone won’t connect to my preferred networks when I’m outside the UK. What should I do?
If it still fails, Mobifon can push a roaming refresh and re-register your device on the visited network.
My data doesn’t work abroad, but calls/SMS do. Why?
This indicates typically:
Mobifon can check your roaming settings and apply a same-day provisioning fix.
I moved my number to Mobifon, but some services aren’t working.
Ports usually complete between 11:00 and 17:00 on working days. If calls, texts, or data fail after this window, Mobifon will:
People calling me still reach my old network. Why?
This happens when one or more networks have not updated your number routing. Mobifon will raise a misrouting ticket with the porting team so that all operators can update their routing tables.
My outgoing calls display the wrong number.
This means your CLI has not finished propagating through all networks. Mobifon can manually resend your provisioning file to EE/Vodafone/O2/Three to correct the caller ID.
My device has been lost or stolen. What should I do immediately?