Taking your mobile/cellphone overseas can be a problem, as in some countries networks just don't work, or there are extremely high roaming charges. The answer could be to take out a short-term rental, so you pick up a cellphone when you arrive at your overseas airport, and return it at the end of the trip.
Adam Phones is a London company which has been specialising in hiring out cell phones on short-term rentals for about twenty years. Their clients include the BBC, the US Embassy in London, members of ABTA (Association of British Travel Agents) and ASTA (American Society of Travel Agents). They're also business partners with Hertz and Travelex, and you can read more about them by clicking here.
