The cost of using your mobile phone abroad is most likely to cause problems if you jet off without checking your network's prices and carry on using your phone as you would at home.

What should you look out for?

There are some cautionary tales on the Telegraph website, including one customer who ended up with a 16,000 phone bill thanks to listening to online radio on his phone when on holiday!

The biggest mistake you could make is to assume your normal tariff counts overseas. Overseas usage will usually be subject to separate, often significantly higher, charges and you will be billed accordingly, so first check with your network exactly what it costs to use your phone abroad.

This information should be on their website, but give them a call if there is anything you are not sure about.

You can then work out what you are likely to spend by deciding how much you really need to use your phone while you are away.

If you are going on a beach holiday you might be able to manage without using it, but if you re travelling for business then using your phone might be unavoidable.

What do networks charge to use your phone abroad?

In the EU

EU roaming charges are being abolished from 15th June 2017, meaning you will not pay any extra to use your phone in EU countries.

However, some mobile providers may apply a fair usage policy, which means you could still be charged if you go over your roaming allowance.

Not all European countries are part of the EU, and it is still unclear how Brexit will affect the cap on EU roaming charges. Check this list before you travel, to find out if you will avoid roaming charges while you are on holiday.

If you will not, avoid using your phone as much as you can because it will cost you a lot: you could pay up to 2.50/min for calls, 1 a text and 8/MB data.

Outside the EU

If you use your phone outside the EU, some networks will charge different prices per country, whereas others have standard charges for using your phone abroad - check with your provider.