If you're in an area where your mobile phone has no signal, your phone can 'roam' to find another network to connect to instead. This is what happens when you travel abroad with your phone. 'Data roaming' refers to your phone connecting to the internet through a different network to the one you pay your bills to.
When abroad, your mobile network can charge quite a bit for roaming to another network, so make sure you know how much you will need to pay before you travel. Data roaming charges for accessing internet will be especially high, and you could find yourself faced with a large bill without realising it.
When using your phone abroad, you can minimise the costs of data roaming charges using the following techniques:
Using these tips will let you enjoy your time away knowing the final bill will be easy to digest and won’t contain any unexpected extras.