What is international roaming?

International roaming is the way your mobile phone works when abroad so that you can make and receive calls, and send text messages (receiving them is free). Your home mobile phone network will not be able to provide you with a signal if you are in a foreign country and therefore they have agreements with local operators allowing you to 'roam' on to their networks – but this comes with an added price. In fact, you will pay more to make AND receive calls and texts.

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What is Tri-band?

Triple band phones are capable of operating in more than 100 countries and across three GSM bands - 900, 1800 and 1900 MHz.

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What is Quad-band coverage?

Compared to tri-band phones, quad-band coverage supports all four major GSM bands. Compared to a tri-band phone supporting the 900 / 1800 / 1900 bands, a quad-band phone adds support for GSM 850. This gives full coverage in the Americas and means that many quad band phones are promoted as offering coverage ‘almost anywhere’ in the world.

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Who are frequent flyers?

Frequent flyers are travellers who spend a lot of time overseas. This could include regular holidaymakers, who perhaps take two or more holidays each year for two or more weeks at a time, business travellers who regularly work overseas or backpack/gap year travellers who will be overseas for a sustained period. For frequent flyers, SIM cards can offer massive call savings.

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Who are leisure travellers?

Leisure travellers are those who travel infrequently, perhaps for a holiday once or twice a year. If you spend limited time abroad the savings that can be made through a local SIM card are likely to be negated by the money spent on buying the card.

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What is a SIM card?

The SIM card is basically an identification card for your mobile phone. It is a small microchip card that goes into your mobile phone handset when you first set it up. It stores information such as your address book, etc, but it also provides information to the mobile phone network so they can recognise, contact and bill individual customers.

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Frequent flyers best buys
Leisure travellers best buys

What is a local SIM card and what is a global SIM card?

A local SIM card is specific to one country or region. Using the SIM card gives you the right to use that area's network only. These are useful if you visit the same area repeatedly. This means you purchase a SIM card for the area you are visiting after unlocking your mobile phone - most phones are locked to a particular network, but unlocking it means you can use any network, only takes a few minutes to complete and is completely legal. You will receive a new travel calling number on the SIM card, which people can use to call you - you should be able to make calls as normal (but remember the international dialling code). Some SIM companies operate a call back service meaning you will dial out and then the number will automatically call you back before connecting. Be sure to read how each SIM card works by reading the information provided on each company's website.

Top-ups can generally be completed online, locally or over the phone. Always read about top-up methods to ensure you will be able to add additional call credit as and when necessary.

With a global SIM card you can roam across countries, and potentially around the world, moving from network to network. This means that if you like to visit more than one country then there are large savings to be made, and they are particularly useful for backpack travellers.

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Frequent flyers best buys
Leisure travellers best buys