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2. eSIM - Wikipedia

   en.wikipedia.org/wiki/ESIM

   An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device as software installed onto a eUICC chip. First released in March 2016, eSIM is a global specification by the GSMA that enables remote SIM provisioning; end-users can change mobile network operators without the need to physically swap a SIM from the device.

3. SIM lock - Wikipedia

   en.wikipedia.org/wiki/SIM_lock

   This is in contrast to a phone (retrospectively called SIM-free or unlocked) that does not impose any SIM restrictions. Generally phones can be locked to accept only SIM cards with certain International Mobile Subscriber Identities (IMSIs); IMSIs may be restricted by: Mobile country code (MCC; e.g., will only work with SIM issued in one country)

4. 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).

5. Remote SIM provisioning - Wikipedia

   en.wikipedia.org/wiki/Remote_SIM_provisioning

   The development of non-removable SIM technology - a new generation of SIM-cards like MFF which are soldered into the device. The appearance and support by mobile operators of the concept of ABC (always best connected) – the opportunity get quality connections from any mobile operator at any point in time.

6. Mobile broadband modem - Wikipedia

   en.wikipedia.org/wiki/Mobile_broadband_modem

   Vodafone brands this type of device as a Vodem. [5] Often a mobile network operator will supply a 'locked' modem or other wireless device that can only be used on their network. It is possible to use online unlocking services that will remove the 'lock' so the device accepts SIM cards from any network.

7. Free sim cards for Big Issue vendors - AOL

   www.aol.com/free-sim-cards-big-issue-000100216.html

   Big Issue vendors are to be given free sim cards and data vouchers to help them cope with the worsening cost-of-living crisis. Virgin Media O2 announced it will be working with the Big Issue Group ...

8. GSM modem - Wikipedia

   en.wikipedia.org/wiki/GSM_modem

   The SIM card provides the module with a unique identification number, which is used to identify the device on the network. The GSM module then communicates with the network using a set of protocols, which allows it to send and receive data. The GSM network is a digital cellular network that uses a set of protocols to enable communication ...

9. eUICC - Wikipedia

   en.wikipedia.org/wiki/EUICC

   eUICC (embedded UICC [1]) refers to the architectural standards published by the GSM Association (GSMA) [2] [3] or implementations of those standard for eSIM, a device used to securely store one or more SIM card profiles, which are the unique identifiers and cryptographic keys used by cellular network service providers to uniquely identify and securely connect to mobile network devices.