With the exponential growth of the Internet of Things (IoT), carriers needed to adapt how they routed Internet traffic and managed devices to accommodate many IoT devices coming online. IoT SIM card is also known as M2M SIM. It is a variation of the traditional SIM which connects the mobile phone to the cellular network and stores the user’s information. The primary difference is that IoT SIM cards are intended to support IoT devices, with their specific data consumption rates/check-in rates and network requirements, rather than mobile phones. Here’s what you need to know about IoT SIM cards and how to use them. And also you will get to know all that you need to know about IoT SIM cards.
What is IoT SIM Card?
An IoT SIM card is a variant of the traditional SIM card, used in personal mobile devices such as smartphones, with additional features designed for IoT devices. This includes things like being more durable, safe, and flexible. An IoT SIM card is an IC (integrated circuit) chip equipped with an electronically erasable, programmable read-only memory (EEPROM), read-only memory (ROM), and random access memory (RAM) in protective plastic. Stores specific information about the SIM device that allows it to authenticate across devices, track locations, manage data networks and monitor data usage. Stores a traditional SIM card authentication credential that allows devices, such as mobile phones or tablets, to connect to cellular networks. An IoT SIM card does the same thing, but for non-traditional devices that make up the Internet of Things, such as cameras, drones, cellular routers, and industrial machines, and other electronic Internet of Things. It provides a link between the connected device and the cloud. The collected data can then be aggregated and accessed through an IoT management platform.
What are the similarities and differences between a regular SIM and an IoT SIM?
Regular SIM and IoT SIM function almost the same way, as there are some differences. The major similarities and differences between SIM cards and IoT SIM cards are as follows.
Management from a Career Platform Perspective
Cell phones often already have user interfaces for things like data usage, network status, and settings. IoT devices rarely do this, so network operators supply customers with these insights, along with the ability to manage data usage and connectivity options. A regular SIM used for cell phones does not have the functionality to provide a management platform with this type of information.
Accessibility and Security
SIM cards assign an IP address to the device, which gets changed when a data connection is established. The carrier platform used to set up the SIM determines whether the assigned IP address will be dynamic or static. Some industrial IoT use cases may require unique workaround solutions such as using an IoT SIM card with a private static IP address to allow the device to do things like change configuration, analyze data, and log files and execute commands. To be accessed remotely. While not generally recommended based on the latest IoT deployment best practices, experienced providers like Zipit will work with you to determine the best solution for your IoT rollout.
Terms of the Contract
SIMs are tied to a particular carrier and whatever roaming agreements they have with other carriers. They are governed by stringent contractual terms established by network operators, high roaming charges for equipment in different countries, and complex inventory logistics. It is very important to make sure that the devices get the correct SIM. IoT SIMs are managed at a scale with flexible contract terms for billing. It offers benefits like different billing options based on usage, ability to change the subscription. IoT SIM allows access to multiple local networks, prioritizing the best available. It is important to note that IoT SIM providers offer different types of coverage in their contracts. You will want to make sure that your coverage includes the coverage you need.
SIM Form Factor and Durability
Both the SIM cards share the Nano, Micro, and Mini form factors. IoT SIMs can also be MFF2-embedded SIMs that are soldered into a device. These tend to be smaller and offer greater flexibility for different use cases and device designs. They are also available in a more durable construction than conventional SIMs for use in environments subject to high temperatures, chemical exposure, and moisture.
What are IoT SIM models and their functionality?
There are mainly three IoT SIM models:
Industrial IoT Sim
Industrial IoT SIMs are much more durable and designed to survive extreme conditions. They are resistant to high and low temperatures, vibration, corrosion, etc. which do not spoil for a long time.
Standard IoT SIM
These are SIM cards designed for IoT, but they are still built on the backbone of traditional SIM cards. So, you’ll get the features you need to keep your IoT devices connected and manageable, without the added overhead of durability. These work well for IoT devices in simpler, less harsh environments.
Automotive IoT SIM
Similar to industrial IoT SIMs, automotive SIMs are built to be more durable than standard SIMs, especially when it comes to connecting motor vehicles. These are more resistant to extreme temperatures, weather, and vibrations, and motions that accompany moving vehicles.
How to choose the right SIM form factor for your IoT application?
1. Full Size
This is the largest SIM card form factor, about the size of a credit card. It is no longer used in most modern devices. it’s almost extinct now
This is the industry standard SIM card size, measuring 25mm x 15mm x 0.76mm. It is commonly used in equipment such as vehicles, vending machines, and payment points. Which is a normal size.
Micro-SIM is half the size of the Mini and is used in more portable devices, such as tablets, GPS, mHealth, and other mobile IoT devices. The same is used in the mobile before us.
Nano-SIM is microscopically 40% smaller, which makes it great for small IoT devices. However, these SIMs are not very well protected, so they cannot be recommended for devices in harsh environments.
5. Embedded SIM
Embedded SIMs, also known as eSIMs, are the most popular choice for IoT devices. These SIMs are soldered directly to your IoT device, so there is no need to install them. They measure only 6mm x 5mm x 1mm and are one of the most durable IoT SIM options. Which will be seen on your mobile in the future.
What is e-SIM?
eSIM is an embedded SIM card. Until recently, if you wanted to connect a device to a cellular network, your only option was a plug-in SIM card on the device where data is stored that provides access to the network and other functionality. In the future, more companies will have access to a new technology called eSIM or non-removable embedded SIM. And those who are advanced companies have started it like google, apple, etc.
SMS provides instant connectivity, making it possible to transfer between networks easily and without physical changes to devices. And they are specifically built to accommodate IoT devices with size constraints, various use cases including shaking potential, as well as power consumption or carrier requirements. They are also small, providing a lot of flexibility for devices. eSIMs are also more secure as they are embedded in the device, and they are not swapped out like traditional SIMs.
Of course, eSIM has its drawbacks. They are not removable or easily replaceable. However, eSIMs are proving to be revolutionary in IoT, and they are worth a look at as they continue to develop. And maybe in the future, due to more advanced technology, these things may appear more developed.
How can I secure an IoT SIM card?
One concern that IoT project managers are quickly facing with IoT technology is security. And protecting is also an important and responsible task which also needs to be done. Every IoT device has access to a central network, which can upload, download and receive data, and therefore poses an increased security risk. Not to mention that the nature of some IoT projects – such as smart cities, for example – puts IoT devices within reach of the public. For these reasons, keeping your IoT devices as secure as possible is a top priority, and this includes keeping your IoT SIM secure. One of the most common ways to keep IoT SIM cards secure is a private APN.
A SIM that uses a private APN is only able to connect to a limited network shared among other SIMs programmed to use that network, unlike a standard, shared MNO. Unlike traditional cellular, where you and someone else with the same carrier are using the same network.
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