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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.
Airalo is a company that sells eSIMs.It is headquartered in Delaware with its operational base in Singapore. [2] As of May 2024, it had 10 million users. [3] It offers eSIMs for use in over 200 countries.
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).
Zadarma was founded in 2006. [1] [5] In 2008, the company began selling virtual numbers in different countries.By 2012, the company launched its PBX (Business Phone System allowing call transfer, recording, forwarding, and interception, as well as instant message notifications within messaging apps like Slack, Telegram, and Messenger) and Zadarma's virtual numbers became available in 70 countries.
Chad Bangladesh (28.18%) DR Congo (Airtel) Gabon (Airtel) Guernsey (Airtel-Vodafone) India Jersey (Airtel-Vodafone) Kenya (Airtel Kenya) Madagascar (Airtel)
Gemalto was an international digital security company providing software applications, secure personal devices such as smart cards and tokens, e-wallets and managed services.
Thomas Haug (first GSM president) and Philippe Dupuis (second GSM president) during a GSM meeting in Belgium, April 1992. In 1983, work began to develop a European standard for digital cellular voice telecommunications when the European Conference of Postal and Telecommunications Administrations (CEPT) set up the Groupe Spécial Mobile (GSM) committee and later provided a permanent technical ...
Devices without a SIM card slot or eSIM capability usually do not have an IMEI, except for certain early Sprint LTE devices such as the Samsung Galaxy Nexus and S III which emulated a SIM-free CDMA activation experience and lacked roaming capabilities in 3GPP-only countries. [4]