Try these solutions;

1) Depending on what phone you have, you can use your home or work WiFi to seamlessly send texts and make calls - even without signal.

Setting Up O2 WiFi Calling
Information can be found on O2’s website.

Setting Up Three Wi-Fi Calling
Information can be found on Three’s website.

Setting Up Vodafone Wi-Fi Calling
Information can be found on Vodafone's website.

2) Make sure your network/carrier settings are up to date. On iPhone, go to Settings > General > About. If an update is available, you’ll get an option to update your carrier settings. On Android, try updating the software in your Settings. You may also need to update your network/carrier version, either from your Settings app, or by going into your Phone app, then pressing the Menu icon followed by Settings. In there, you might find an option to update the version.

3) If you’ve tried Solution 2 above, and you can’t get signal anywhere, your SIM might be faulty. Try it in another phone on the same network, and if that device doesn’t receive any signal, please contact your network directly to order a replacement SIM and SIM swap.

O2: 0344 809 0202
Three: 0333 338 1001
Vodafone: 0333 304 0191

4) If you insert your SIM card into another phone on the same network, and it does get signal, your phone could be faulty. You might need to organise an exchange or repair, by clicking here.

Please see our Faulty Products page for help and advice.

If you’re within the 14-day return period, your phone is in pristine condition, and you meet our other Terms, we may be able to arrange a different colour or phone for you.

If you’re within the 14-day return period, your phone is in pristine condition, and you meet our other Terms, we may be able to arrange a different mobile phone contract for you.

If your order hasn’t shipped yet, we’ll refund any money you’ve paid once your order is cancelled. Please allow up to five working days for the funds to reach your account, although this can take longer depending on your bank.

If your order has shipped, you’ve returned your phone and your network contract has been cancelled, please allow up to 14 days from the date your cancellation is confirmed for any funds you’ve paid to be refunded. Your bank may take longer to process the refund.

For any network charges, please allow up to 28 days from the date your cancellation is confirmed for the refund to reach your account. For more information about network refunds, please contact your network directly.

O2: 0344 809 0202

Three: 0333 338 1001

Vodafone: 0333 304 0191

Along with the phone, please return all original contents, including the box, charger and any other accessories, in pristine condition. If any items are used, damaged or missing, additional charges may apply.

Please get in touch with us as soon as possible to check the status of your return. We may still be able to stop it in time.

You have 14 days to return your phone, provided that:

The phone is in pristine condition
The original box and all accessories are returned undamaged
Any additional gifts or promotional products are returned undamaged

To arrange the return of your phone, please get in touch with us.

Please call your network directly to cancel your SIM plan.

You can cancel your SIM-only contract within 14 days of receiving your SIM without incurring any costs, apart from any usage charges. Any additional gifts or promotional products must also be returned undamaged. To cancel your SIM, please get in touch with us.