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2. Roaming SIM - Wikipedia

   en.wikipedia.org/wiki/Roaming_SIM

   Some providers achieve this automatic call interception and callback by encoding a program onto the SIM card. Other providers use Multi-IMSI (International Mobile Subscriber Identity) technology to lower the cost of roaming. In this case, there is a program on the SIM card that selects the lowest cost IMSI (or 'profile') to use in a specific ...

3. Roaming - Wikipedia

   en.wikipedia.org/wiki/Roaming

   In more technical terms, roaming refers to 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 travelling outside the geographical coverage area of the home network, by means of using a visited network. For example: should a ...

4. SIM card - Wikipedia

   en.wikipedia.org/wiki/SIM_card

   A typical SIM card (mini-SIM with micro-SIM cutout) A SIM card or SIM (Subscriber Identity Module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone devices (such as mobile phones and laptops).

5. Traveling abroad? Your wireless network's roaming plan isn't ...

   www.aol.com/news/traveling-abroad-wireless...

   News. Science & Tech

6. 5 tips for protecting your phone while traveling abroad - AOL

   www.aol.com/lifestyle/5-tips-protecting-phone...

   Spokeo consulted cybersecurity sources and travel guides to determine some of the best ways you can protect your phone while traveling. 5 tips for protecting your phone while traveling abroad Skip ...

7. Cellular Abroad - Wikipedia

   en.wikipedia.org/wiki/Cellular_Abroad

   After operating another successful internet company selling region-free DVD players, Sebastian saw similar market potential for international SIM Cards, and launched www.cellularabroad.com in October 2002, [1] offering early tri-band frequency GSM cell phones and SIM Cards for 25 popular travel destinations. Cellular Abroad became incorporated ...