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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).
A card with all 3 features is called a removable user identity card, or R-UIM. Thus, the R-UIM card can be inserted into CDMA, GSM, or UMTS handsets, and will work in all three cases. In 3G networks, it is a mistake to speak of a USIM, CSIM, or SIM card, as all three are applications running on a UICC card.
Xiaomi TV, [3] Xiaomi Mi Box, Mi Box S, [4] Mi TV Stick, [5] Xiaomi TV Stick 4K, [6] and Xiaomi TV Box S (2nd Gen). [7] Nokia Streaming Box, [8] and Nokia Media Streamer (Europe) [9] Walmart Onn Android TV Box [10] Realme 4K Smart Google TV Stick [11] and 1080p Smart Android TV Stick (India) [12] Akari SMARTBOX (Indonesia) [13] [14] Dynalink ...
The ADT-2 development kit device was released before the release of Android TV 9.0. [15] Android TV 10 was released on December 10, 2019, [16] together with the ADT-3 development kit. [17] Android TV 11 was released for the ADT-3 on September 22, 2020, while rollouts were planned for original equipment manufacturer partners in subsequent months ...
Some phone models utilize a "hybrid" SIM tray, which can hold either two SIM cards, or one SIM card and one MicroSD memory card. [31] [32] The Huawei Mate 20 range introduced a proprietary memory card format called Nano Memory, exactly the size and shape of a nano SIM card. [33] Some devices accept dual SIMs of different form factors.
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.
The eSIM describes the functionality in the SIM, not the physical size of the SIM - and there are eSIMs in many formats (2FF, 3FF, 4FF, MFF). GSMA have also developed a compliance framework [ 10 ] for eSIM devices, eUICCs, and subscription management products - to help with interoperability and security for products supporting eSIM.
Multi-SIM technology is a result of poor security algorithms used in the encryption of the first generation of GSM SIM cards, commonly called COMP128v1. SIM cloning is now more difficult to perform, as more and more mobile operators are moving towards newer encryption methods, such as COMP128v2 or COMP128v3. SIM cloning is still possible in ...