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The US variants also force a reboot each time the user switches eSIMs, while other models do not, because the CSC codes correspond to a single carrier. If a phone is bought directly from a carrier with a SIM lock, the phone can only add eSIMs from the same carrier as the one on the physical SIM card, even after a carrier unlock.
The language that is used to describe these specification is a little confusing since eSIM is not a physical format (or "form factor" - the phrase that is used to describe the various SIM sizes). 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).
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).
The eSIMs are far from a perfect solution: Older phones can’t use them and an existing connection is needed to download new ones. Some of the eSIMs don’t work properly.
However, activating mobile services on AT&T will permanently lock the Apple SIM to AT&T, requiring the purchase of a new Apple SIM in order to use a different carrier. [4] The Apple SIM is known as a Removable SIM with Remote Provisioning [5] – it is a special SIM card
In some cases, a SIM-locked handset is sold at a substantially lower price than an unlocked one, because the service provider expects income through its service. SIM locks are employed on cheaper (pay-as-you-go) handsets, while discounts on more expensive handsets require a subscription that provides guaranteed income. Unlocked handsets have a ...
Aldiko is an e-book reader application for the Android and iOS operating systems. It supports the EPUB format for digital publications and incorporates facilities for browsing online catalogs on thousands of books (including thousands of free public domain work) and downloading them directly into the user's personal library.
Apple Books (known as iBooks prior to iOS 12) is an e-book reading and store application by Apple Inc. for its iOS, iPadOS and macOS operating systems and devices.It was announced, under the name iBooks, in conjunction with the iPad on January 27, 2010, [2] and was released for the iPhone and iPod Touch in mid-2010, as part of the iOS 4 update. [3]