What is eUICC?

eUICC (Embedded Universal Integrated Circuit Card) is a GSMA standard for securely switching mobile network of a SIM over the air without changing a physical SIM. It does not restrict your SIM type. 

What is eSIM?

eSIM is often conflated with eUICC but they are infact different. eSIM refers to an embedded SIM. This means a SIM that have been directly embedded into a circuit board within your device. The terms are often mixed up because embedded SIMs need eUICC technology to be able to switch and localise as you cannot physically swap the SIM.

Which SIM card to choose?

The size and type of SIM you need to select depends on the device’s purpose, functionality, and space available to host a SIM card or chip.

There are two types of SIM cards:

  • Traditional SIM (UICC), which can be either plastic SIM card (2FF, 3FF and 4FF) or a chip SIM (MFF2) that is soldered onto the circuit board during production. 
  • eSIM (eUICC), which also can be either plastic eSIM card (2FF, 3FF and 4FF) or a chip SIM (MFF2)

What is the permanent roaming restriction?

Roaming restrictions are imposed by country regulators or networks and only allow a SIM to roam for a limited period in one particular country. Once the device reaches that limit, it is automatically kicked out of the network. This is a significant concern for IoT devices which are supposed to roam in a country for many years.

As of today, Brazil, India, Turkey, and Canada have the strictest regulatory restrictions in place to prevent permanent roaming. We are able to solve these issues by localising the SIMs in the deployed devices to a local mobile network. We still use our multi-IMSI fallback connectivity to provide additional connectivity options should a device have an issue. 

Why should you consider cellular connectivity for IoT?

There are multiple reasons why cellular connectivity (2G, 3G, 4G, NB-IoT, Cat-M1) is potentially your best choice for your IoT deployment.

  • Availability: cellular networks are globally widespread and ubiquitous. A cellular subscription also allows you to roam on different network carriers, meaning the coverage is not limited to a specific area, city, or country.
  • Security: cellular technology has been maturing for 50+ years now. All the solutions are GSMA certified and accepted by all global carriers. Therefore, other technologies cannot match the reliability that cellular offers.
  • Range: WiFi and Bluetooth could be useful for high bandwidth applications, but don’t reach far enough for long-distance communications. With a cellular network, your IoT or M2M devices can connect to a cell tower from a few dozen miles away.
  • Cost: Carriers have made heavy investments into cellular networks to provide secure, reliable service to as many customers as possible.

What network technologies and countries do you support?

Eseye provides 2G, 3G, 4G, NB-IoT & Cat-M1 coverage in over 190 countries.

What mobile networks do you support?

We have interconnects with 12 key mobile network providers including Verizon, Telus, China Telecom, Clara, MTN, Vodafone and KPN. These mobile networks are part of the AnyNet Federation that we founded. We federate data across these networks to provide IoT deployments with the highest levels of connectivity available. In total through roaming agreements this gives devices access to over 700 mobile networks. 

Why choose Eseye for IoT?

Different customers choose us for different reasons. You can learn more about why they enjoy working with us from independent review sites including Gartner Peer reviews and G2. (link to profile on both)

We are a guide for organisations in the complicated world of IoT. We not only have the world’s most advanced IoT SIM (Read More) that provides near 100% global connectivity – but we also have expertise in IoT hardware, the ability to future proof IoT deployments and intelligent platforms to help you get the most from your IoT deployment. What’s more with partners including Amazon and Microsoft – we are ideally placed to help your IoT journey from device to cloud. 

Want to know more? Get in touch

What is SM-SR?

Subscription Management Secure Routing or SM-SR is a critical part of the eUICC process where you switch a network over the air. It securely delivers the encrypted operator credentials to the SIM and then, once the credentials are installed, remotely manages the SIM thereafter (enable, disable and delete the credentials as necessary during the product’s lifetime). 

We have also developed our own to allow us to seamlessly switch networks on your behalf as needed. It allows us to make the localisation process – which could have been painful and resource heavy – simple and seamless.

Learn more about our SM-S

What is Multi-IMSI?

An IMSI (International Mobile Subscriber Identity) is a globally unique number used to authenticate the device on a cellular network. The 16-digit IMSI is made up of three components: mobile country code, mobile network code, and subscriber number. 

In short  – IMSI equates to a mobile network profile. With multi-IMSI you have a SIM that has multiple mobile network profiles. The SIM will rotate between these profiles to ensure the device can connect. 

This is part of what allows us to deliver near 100% global connectivity along with our eUICC technology and our own SM-SR 

Learn more about Multi-IMSI here 

What is localisation?

Localisation is the process of sending a new network, that is from the region the device is deployed, over the air to your device. For example if you deployed a device in the United States – you could deploy the device with a global roaming profile and then localise it to Verizon by pushing this network over the air. 

We do this while maintaining our bootstrap IMSI’s as fallback options in case the new network can’t connect in the devices location or in case it has issues in the future. This is one of the ways we achieve near 100% global connectivity.

What are the problems with NB-IoT for global IoT deployment

Only recently have large Mobile Network Operators started to sign roaming agreements for NB-IoT. Without the infrastructure behind it to allow networks to roam – even temporarily – multi-country deployments will be time consuming and .resource heavy to manage. You will need to organisae separate contracts with multiple MNO’s for each region and identify where you will actually be able to guarantee connectivity. This resource issue often results in IoT projects becoming a burden to their organisation.

Can’t find what you are looking for? Try our Technical Resources

Technical Resources