Today, we offer two types of SIM cards to meet your IoT and M2M connectivity needs, and we'd like to explain the main difference between them.
Single-IMSI SIM Cards
These SIM cards are the most common. In their profile, you'll find only one configured IMSI, which usually belongs to the Mobile Network Operator (MNO) providing you with the service. With this IMSI, you'll have access to the MNO's network and its roaming partner networks.
Multi-IMSI SIM Cards
SIM cards of this type are a bit more versatile. Their profile includes multiple IMSIs from different MNOs. This means that your SIM can connect to multiple networks, depending on the IMSI you choose to use. Additionally, it provides redundancy in case one of the IMSIs configured in the profile can't connect to the networks for any reason – no problem, you can switch to another until your SIM card is connected and working.
How to Decide Which One to Use
Depending on your specific use case, you may need to decide which type of SIM to use. To make this decision, consider the following points:
The number of networks you can access in a country using a single IMSI: If you can access multiple networks with one IMSI, it may provide enough connectivity redundancy to use a single IMSI SIM.
Your device's capabilities to work with multi-IMSI SIMs: Devices are typically configured to work with single-IMSI SIMs, and switching IMSIs could be a challenge. Ensure your device is capable of doing so.
Redundancy level for your project: Some projects require high connectivity redundancy. In such cases, redundancy in both network access and IMSIs may be necessary to ensure your device remains connected.
Our SIM Cards
We're here to assist you. We offer both types of SIM cards, so don't hesitate to get in touch with your account manager for more information.