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In practise "eSIM upgrade" in the form of a normal SIM card [4] is possible (using the Android 9 eSIM APIs) or eSIM can be included into an SOC. [5] The requirement of GSMA certification is that personalisation packet is decoded inside the chip and so there is no way to dump Ki, OPc and 5G keys.
Phones with a dual SIM feature allow for a physical SIM and an eSIM to support two phone numbers on a single device. Flagship devices all have dual SIM support for physical and eSIM cards.
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.
A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks.
The STK technology has limited independent development support available. [8] If a mobile phone does not support SIM Application Toolkit, users may not be able to use the service or network correctly. Issues with several mobile network operators have been noticed on smartphones that don't support STK, like Nokia N900.
The iOS mobile operating system developed by Apple has had a wide range of bugs and security issues discovered throughout its lifespan, including security exploits discovered in most versions of the operating system related to the practice of jailbreaking (to remove Apple's software restrictions), bypassing the user's lock screen (known as lock screen bypasses), issues relating to battery ...
This is because VNeID 2.1.6 update has added new security measures to stop working on Android devices with root access, unlocked bootloader and developer mode enabled. To use, users must disable root access to the device, relock bootloader and turn off developer options. [42]
Android October 2015 all versions Pro 6 Android May 2016 all versions Pro 6 Plus Android November 2016 all versions Pro 6s Android December 2016 all versions Pro 7 / Pro 7 Plus Android August 2017 all versions Microsoft: Lumia 640: Windows Phone: April 2015 all versions, except RM-1076 and RM-1077 Lumia 650: Windows Phone February 2016 NXP ...