Check the coverage in your area to see if there is a temporary issue affecting the signal at your postcode.
If everything seems fine, there may be a problem with your device - you can take a look at our Help Centre for advice.
If you’re still experiencing network issues, then contact us via web chat. Our team are available 8am-8pm, 7 days a week.
If you need help outside of these times, you can still submit a question and leave your email address or mobile number. We’ll reply as soon as possible and you'll get an alert to your email of mobile.