Sim Cards

All You Need to Know About IoT (Internet of Things) Sim Cards

Do you know that physical devices will be connected and share data? Yes, it is possible to know and the Internet of Things (IoT) is making it possible. The IoT tends to refer to the billions of devices, which are interconnected and share data. The one device, which pops up in mind after reading this, is the mobile phone of course. IoT deployments include millions of devices connected with a network, which is flexible, stable, and secure.

As indicated by McKinsey, 25% of companies now use IoT innovation, and Gartner projects that by 2023, the IoT devices will grow to 43 billion when it comes to numbers.

Therefore, this development has fueled the development of the IOT SIM card, just a variant of a traditional sim card. So what are these IoT SIM cards? How do they work and differ? Don’t worry. We will get through this all one by one. You can also check the websites of iOT Sim card providers such as Euro International Communications for better ideas on M2M and IoT sim cards.

IoT SIM Cards Working:

The key feature of IoT SIM cards is that they connect to hundreds of carriers globally. IoT SIM cards are encased in a protective plastic layer including a contact chip. The chip holds up a processor equipped with 16-256 KB of electronic erasable, programmable read-only memory (EEPROM). It contains read-only memory (ROM) and random access memory (RAM). 

The SIM serves as the storage bank as when it comes to the device distinctive information. For example, authenticating credentials and carrier data. SIM cards are useful for IoT applications as they help developers to authenticate individual devices. 

Data Storage and Connectivity:

There is a set of credentials for authentication, which will allow the device to connect to the network. Although the IoT SIM cards maker offers the IoT SIM cards which are the same in functionality and even more capable of managing technical aspects. They have the functions like to identification of the device for the network, governing and managing the connection, and enabling the device to send and receive data. The normal and the IoT SIM cards, both of the following identification information.

Authentication key:

There is always a unique key on every SIM card. It is mounted in the form of a 28-bit value. With the help of this key (Ki) which is assigned by the (GSMA) the device is authenticated in the network. Although to ensure the security of the device, the real key (Ki) is not transmitted. 

Integrated Circuit Card ID (ICCID):

For the chip identification, this ICCID, a number is assigned to the SIM card.

These numbers also help to know eSIM profiles. These numbers are stored inside the processer and displayed on the outer casing as well.

Location Area Identity:

There is always an assignment of, identifier and LAI to every sector of public land mobile network (PLMN). Normally LAI consists of mobile network code (MNC), mobile country code (MCC), and location area code (LAC) as well. So this ultimate data allows us to locate the SIM card along with the device.

Regular SIM Cards vs. IoT SIM Cards:

The SIM cards were designed to connect mobile phones to wireless networks. They are used to securely identify and authenticate subscribers.
Now the SIM cards have been revolutionized and have removed the barriers to global communication. This also fuels the culture of smooth media consumption. IoT setup for the global network coverage not to one carrier just like traditional ones. IoT cards could connect to multiple carriers globally. 

Another particular difference is that the business clients require the feature to monitor and manage IoT SIMs from wherever they want. It is possible with the help of the UI or API. Some network providers likewise offer more granular setup alternatives, similar to the capacity to set data limits across a group of SIMs.

However, with IoT SIM cards, you or anyone can share data plans across multiple devices so the cost efficiencies are managed well. 

The Form Factors of IoT SIM:

There is no doubt that with time, devices are becoming smaller but are way improved in performance. The same is the case with the SIM cards. For the IoT device, choose the right SIM form factor considering environmental conditions and standards of the network. The SIM cards are available as
Mini-SIM (2FF):

When it comes to vehicle tracking sensors, this one is the best choice.

Micro-SIM (3FF):
Mostly utilized in the health monitors and tablets.
Nano-SIM (4FF):
Wearable devices such as watches make good use of this SIM. It is also way slimmer than macro and mini-SIM. So good perfect match for the wearables.

Embedded SIM(eSIM or eUICC):

As the name suggests embedded, they are built into the device. So this makes the IOT device more powerful like more resilience in the severe weather.

Which IoT devices use SIM cards?

 After reading all, this is a mandatory question that which devices make use of IoT SIM cards. So let us have a look at the different IoT devices, which make use of SIM cards.

Home automation devices:

The control of Air conditioners, fridges, and toaster, automatic light, and door control is a good example of IoT applications. 

Agriculture sensors:

 Now the farms are managed in a completely different style. The soil monitoring and livestock tracking are some good uses of agriculture sensors.


Smart glasses, watches, and fitness tracking devices are already popular in the market.

Logistics and fleet management sensors:

This helps businesses to track the progress and predict several other things relevant to business.

Final Thoughts:

There is no doubt that the IoT and its applications have a healthy future. Not only the communication sector but our homes will be revolutionized by this technology. So keep learning and exploring new things about this technology and take your knowledge to the next level. Keep reading and good day 😊

Share your love
Christophe Rude

Christophe Rude

Articles: 15890

Leave a Reply

Your email address will not be published. Required fields are marked *