What does esim function mean?

The esim function refers to the "embedded SIM card", which is an electronic SIM card. It embeds the traditional SIM card directly into the device chip. There is no need to install an additional SIM card, which can greatly save money on mobile phones, The interior space of devices such as smart watches. eSIM technology is widely used, including wearable devices, tablets, PCs and other terminals, such as smart speakers, smart rearview mirrors, POS machines, etc. Covering various application scenarios such as sports, home, medical, entertainment, education, etc.; even mobile phones can use eSIM to easily achieve dual-SIM dual-standby.

#The operating environment of this tutorial: IOS 16 system, iphone13 mobile phone.

Many mobile phones and phone watches support eSIM independent calls, and you can activate one card for dual ends or independent numbers according to your own operator.

What does esim function mean

The full name of eSIM is Embedded-SIM, which means embedded SIM card. Embedded SIM card embeds the traditional SIM card directly into the device chip without the need to install an additional SIM card, which can greatly save the internal space of mobile phones, smart watches and other devices.

Embed a traditional SIM card directly into the device chip, eliminating the need to use a physical nano-SIM card to activate the cellular mobile number provided by the operator.

eSIM can also load the user's contract data (i.e. eSIM electronic card) on the operator's network into the security chip through over-the-air downloading, so that one built-in chip can be used by multiple operators' electronic cards. shared.

eSIM is an electronic SIM card. It is a data file that can be downloaded to a mobile terminal through the Internet. With it, various electronic products can connect to the Internet, make and receive calls, send text messages, etc. Functionally, it is the same as an ordinary SIM card. Any device that can access a mobile network can use eSIM. Of course, the premise is that the device hardware supports eSIM. The eSIM solution integrated in the hardware currently takes up only 1/3 of the space of a Nano SIM card, and will evolve to a smaller size in the future.

eSIM technology is widely used, including wearable devices, tablets, PCs and other terminals, such as smart speakers, smart rearview mirrors, POS machines, etc. Covering various application scenarios such as sports, family, medical, entertainment, education, etc. Even mobile phones can use eSIM to easily achieve dual-SIM dual-standby, and users can access two or even three operators at the same time, and use different numbers for voice and data.

The dual-SIM function can be used through eSIM

For example, on iPhone models, you can use a physical nano-SIM card to set up one cellular number, and use eSIM to set up another or More other cellular numbers.

If you don't have a nano-SIM card, you can use just an eSIM if your carrier supports eSIM as your only cellular number. Your carrier-provided eSIM is stored digitally on your iPhone.

Since there is no longer a need to set up a separate SIM card slot for the device, devices designed with eSIM will have a lighter and thinner body. At the same time, eSIM can significantly reduce operators’ SIM card procurement costs and coding costs. No. resource management costs.

Advantages Introduction

The highly integrated eSIM solution can first solve the problem of SIM card slot occupying a large amount of mobile phone space. Although SIM cards are now very small, as mobile phones become increasingly thinner and lighter, the card slot will still restrict the appearance design and battery capacity of mobile phones or wearable devices.

In addition, the SIM card slot also affects the waterproof performance of the phone. The eSIM is integrated inside the phone and does not require slotting on the body, which can improve the waterproof level of the phone.

Using the eSIM solution, each mobile terminal can independently use the mobile network to access the Internet and even make phone calls. Your various devices will never become "bricked" without WiFi.

Using eSIM, there is no need to change the SIM card when changing operators. Users do not have to go to the business hall and can apply online with just a few clicks. For operators, users can save money without using a SIM card. It's a huge expense, after all, their number of users is measured in hundreds of millions.

The advantages of eSIM are not limited to the ease of use of mobile phones and wearable devices. Its superiority is also reflected in harsh environment applications. For example, when running in an environment with high temperature, low temperature, and high vibration, the device plug-in card is very easy to be damaged, and eSIM can perfectly solve these problems.

Convenience

Since it is no longer necessary to set up a separate SIM card slot for the device, future devices designed with eSIM will have lighter and thinner bodies , consumers can switch operators at any time due to cost and operator advantages. For those users with multiple mobile phone numbers, the design of the eSIM card is more attractive because they no longer need multiple mobile phones to switch, and enterprise-level users can also greatly reduce their device purchase costs.

cost

As consumers can switch operators more easily, traditional billing methods and long-term contracts have begun to disappear from the market. There are even reports that a company is already developing an application that can help consumers automatically switch operator networks based on tariffs and network speeds.

Travel

Mobile device users no longer need to spend time choosing destination operators when traveling abroad in the future, because eSIM settings can help users avoid sky-high data traffic The bill appears. For example, when the device detects that the user is in another country, its built-in eSIM will automatically switch operator networks. For those large enterprise users who often need to travel abroad and go on business trips, this design is not only very convenient, but also greatly reduces the communication costs between themselves and the enterprise.

Security

Since mobile phones no longer require physical SIM cards, it will no longer be necessary for hackers to find ways to crack stolen mobile phones in the future. For enterprises, they can use eSIM card authentication to allow access to the corporate network, and remotely delete device data if an employee's device is lost through "Mobile Device Management solutions" .

More importantly, the popularity of eSIM cards will prompt mobile operators to pay more attention to their own information and privacy data protection, because consumers in the future will be able to switch operators very easily, so the latter is bound to More effort needs to be spent on real-time information protection and privacy assurance.

Three major changes

eSIM technology brings three major changes. First, the card slot is removed, which brings freedom of terminal design. At the same time, because the chip is embedded in Among the equipment, the waterproof and earthquake-resistant performance can be comprehensively improved; the second is remote number downloading, giving users the freedom to access the Internet anytime and anywhere; the third is the multi-scenario eSIM, making pan-intelligent terminal access more convenient and bringing about the Internet of Everything. More application possibilities.

Expand knowledge:

Who invented the eSIM card?

is Apple. As early as 2011, Apple applied for a patent for a virtual SIM card with the U.S. Patent and Trademark Office. In September 2014, Apple released eSIM for the first time on the iPad Air 2. Cards are applied to physical products.

Since it is an embedded chip card, what should I do if I want to change operators or numbers?

The eSIM card realizes number login or change through OTA over-the-air download technology. A simple description is like the current smartphone upgrade. The manufacturer releases the OTA upgrade package. After downloading, you can upgrade and restart. .

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