What is an eSIM Bootstrap Profile? Default Configuration for Initial Network Connectivity of IoT Devices

What is a Bootstrap Profile?

An eSIM bootstrap profile is an initial, preloaded network configuration on an eSIM (embedded SIM) that allows a device to connect to a mobile network as soon as it is activated — whether on the production line or in the field. This profile contains essential connectivity details such as an IMSI (International Mobile Subscriber Identity), authentication information, and the address of the eSIM management platform (SM-DP+).
Without a bootstrap profile, an eSIM device cannot establish a connection to the network to remotely receive further configurations such as downloading the operational SIM profile.

Why Is a Bootstrap Profile Important?

• It enables the first network connection. Without it, no initial communication with the eSIM platform or provisioning system is possible.
• It is essential for Remote SIM Provisioning (RSP). The bootstrap profile allows the device to contact the Subscription Manager Data Preparation platform (SM-DP+) in order to download additional or replacement profiles.
• It simplifies mass deployments. Manufacturers can equip devices with a universal bootstrap profile that works globally, streamlining installation and logistics.
• It enables zero-touch provisioning. Once powered on, the device automatically connects to the network, downloads the correct SIM profile, and configures itself without manual intervention.

What Does an eSIM Bootstrap Profile Contain?

• A temporary IMSI and keys for network access.
• The SM-DP+ address of the provisioning platform.
• Basic network parameters.
• Security certificates for encrypted communication.
• Optional roaming support for global access.
• The profile typically has limited functionality and is intended solely to establish the first network connection.

How Does It Work in Practice?

• Factory installation, where the eSIM chip is programmed with the bootstrap profile by the manufacturer or a secure element vendor.
• Initial activation, where the device, when powered on, automatically searches for a network using the bootstrap profile.
• Connection to SM-DP+, where the eSIM establishes a secure link with the provisioning platform and receives instructions or a new, permanent SIM profile.
• Download of the operational profile, where the device installs a functional profile specific to the end user or application.
• The bootstrap profile is deactivated or overwritten. In many cases, it becomes inactive or is deleted after the operational profile is installed.

Benefits of eSIM Bootstrap Profiles in IoT Applications

Faster deployment of devices in the field without the need for a physical SIM card.
Reduced manual configuration and lower installation costs.
Global deployability through roaming or multi-IMSI profiles.
High scalability for OEMs and system integrators.
Remote lifecycle management via eSIM platforms.

More Information

Would you like to use eSIM bootstrap profiles for your IoT project? Thingsdata provides support for preprogramming eSIMs, managing them via SM-DP+ platforms, and implementing dynamic SIM profiles.
Contact us at +31-85-0443500 or  info@thingsdata.com, or explore our eSIM solutions in the Thingsdata webshop.