Mobile Roaming happens when a mobile phone subscription is being serviced by a network other than the network to which the subscription was created.
The basic definition of mobile roaming was formulated when the standards for mobile telephony (GSM) were laid down, and defines mobile roaming as "the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when traveling outside the geographical coverage area of the home network, by means of using a visited network."
So, what is roaming? Mobile sim roaming happens when a mobile phone is being serviced by a network that is not in the same geographic location. Or, in other words, if you have a mobile phone with a United Kingdom mobile phone network and you use that phone in another country, say Spain, you will be using a Spanish mobile phone network to make and receive calls, send and receive text messages and use data.
Let's say are you are using an iphone roaming, your calls, texts and data will first go to the Spanish mobile phone network, then to your actual mobile phone network in the United Kingdom and then on to its destination.
For most subscribers this means that mobile roaming is experienced when traveling, and using the mobile telephone abroad and your calls, texts and data have to use an extra network.
So, why roaming charges?
The higher or additional roaming sim charges when using your phone abroad are because you have to pay for the roaming call, roaming text or roaming data used with the additional mobile phone network in the country you are traveling in. The rates offered by the specialist roaming sim card and sim tariff suppliers advertised on roamingsims.co.uk aim to be the cheapest in the market, with up to 80% savings on main stream mobile phone networks.
There is a variety of international sims and international sim packages or offers available. Some supplier will have better roaming rates for a USA sim card while other suppliers will specialise on roaming costs with a Europe sim card. Whether you need iphone roaming with data to keep up to date on facebook, or global sims for your blackberry to stay on top of emails, roamingsims.co.uk will help you find the best one for you
So, to find the best international calling sim or mobile roaming package for your needs, simply select the country you'll be visiting from the country drop down menu at the top of the page. And, if we didn't answer your "what is roaming" question, send us an email and we'll do our best to answer.
You can also look at the mobile roaming glossary for more information.
Find your Mobile Roaming Solution here