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2. SIM card - Wikipedia

   en.wikipedia.org/wiki/SIM_card

   A typical SIM card (mini-SIM with micro-SIM cutout) A SIM (Subscriber Identity Module) card 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).

3. Mobile number portability - Wikipedia

   en.wikipedia.org/wiki/Mobile_number_portability

   2012.11.30 Up to 8 working days Free MNP can take up to 8 working days but usually takes no longer than 1–2 working days. Switching occurs between 1 am and 5 am. Peru: 2010.01.01 7–9 Free sim card of the new mobile company that will cost around 15 PEN. United States: 2003.11.24 0 Free

4. 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 ...

5. List of mobile network operators in Europe - Wikipedia

   en.wikipedia.org/wiki/List_of_mobile_network...

   Austria has 13.0 million assigned numbers (i.e. 2.0 2G, 10.8 3G and 0.1 4G SIM cards), or a 151.0% penetration rate (Q4 2014). [11] The regulatory authority for telecommunication in Austria is the Austrian Regulatory Authority for Broadcasting and Telecommunications (RTR).

6. GSM - Wikipedia

   en.wikipedia.org/wiki/GSM

   Pre-paid GSM SIM cards were launched in 1996 and worldwide GSM subscribers passed 100 million in 1998. [9] In 2000 the first commercial General Packet Radio Service (GPRS) services were launched and the first GPRS-compatible handsets became available for sale. In 2001, the first UMTS (W-CDMA) network was launched, a 3G technology that is not ...

7. Lebara - Wikipedia

   en.wikipedia.org/wiki/Lebara

   In 2004, Lebara launched its first mobile virtual network, a low-cost international service in the Netherlands, selling SIM cards using mobile carrier Telfort, a subsidiary of KPN. [4] After finding success it subsequently launched operations in other European countries including the UK (2007), France , Spain , Switzerland , Germany (2010) and ...