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IoT SIM Control API

Control every IoT SIM from your own systems

One REST API for SIMs on 750+ networks.

Request API access
Order a free test kit
Networks
750 +
Every API call controls a non-steered SIM with access to 750+ mobile networks worldwide.
Customers
1000 +
More than 1,000 businesses run their IoT connectivity on Com4.
IoT Connections
20 M+
Over 20 million SIMs connected, from pilots of a few devices to fleets of millions.
Years
15
15 years of IoT connectivity expertise, Nordic at heart and part of Wireless Logic.

Manual SIM admin stops working once your fleet grows

When a fleet grows past a few hundred devices, managing SIMs by hand in a portal stops working. Activations wait for someone to log in. A device that starts burning data runs all weekend before anyone notices. And your own platform never quite knows what the network knows.

The Com4 IoT API puts SIM control where your team already works. It works alongside Polaris CMP: the portal gives your team visibility, and the API automates the repeat work.

SIM lifecycle icon
SIM lifecycle

Register, activate, suspend, reactivate and deactivate SIMs programmatically, without anyone logging in to a portal.

Monitoring icon
Usage monitoring

Real-time data usage per SIM or across the whole account, plus historical data sessions for troubleshooting.

Control icon
Service profiles

Assign and change data limits, network access and plans per SIM or per device type.

Roaming icon
Roaming control

Read and manage roaming profiles per account, so global fleets stay cost-effective and connected.

Security icon
Private APN

Configure or check a private APN on each SIM to keep sensitive device traffic off the public internet.

Scalable icon
Built to scale

Endpoints designed for bulk work, so the same integration handles hundreds of SIMs or millions.

API code on a laptop screen, representing the Com4 IoT SIM control API

Built for production fleets

  • Standard REST over HTTPS. Works with any language that can make an HTTP request: Python, Java, C#, Node.js, Go and more.
  • Secure by default. Server-to-server authentication with the OpenID Connect client credentials flow.
  • One SIM, many networks. Every call controls a non-steered SIM with access to 750+ networks, on traditional SIM, eUICC and SGP.32.
  • Your own mobile core. Com4 runs its own mobile core with its own PLMN code, now based on Nokia 5G SA, which gives full control over the service behind every API call.

Core endpoints

Example endpoint structures. Always check the API documentation for current definitions and parameters.

SIM lifecycle

POST /sim-cards/register Register new SIMs to your account
PUT /sim-cards/{simId}/activate Activate a SIM
PUT /sim-cards/{simId}/suspend Temporarily suspend a SIM
DELETE /sim-cards/{simId} Deactivate a SIM

Usage and monitoring

GET /sim-cards/data-usage Usage across many SIMs
GET /sim-cards/{simId}/data-usage Usage for one SIM
GET /sim-cards/{simId}/data-sessions Historical data sessions

Profiles and security

PUT /sim-cards/{simId}/service-profile Set data limits and network access
PUT /sim-cards/{simId}/private-apn Put a SIM on a private APN
GET /accounts/{accountId}/roaming-profiles Manage roaming profiles

What teams automate first

1. Zero-touch onboarding. Your production line registers and activates SIMs the moment a device passes final test.

2. Cost guardrails. Your backend polls usage and suspends a SIM that crosses a threshold, before the invoice surprises you.

3. Customer self-service. OEMs show SIM status and usage inside their own customer portal.

4. Secure segments. Devices that handle sensitive data move onto a private APN automatically.

Get started in four steps

Request API access and receive your client ID and secret. Read the API documentation. Build and test against your own SIMs, or order the free test kit. Go live, with Com4 support behind you.

Request API access

Earth seen from space, representing global IoT connectivity managed through the Com4 API

Questions about the Com4 IoT API

Does Com4 offer a REST API for IoT SIM management?

Yes. The Com4 IoT API is a RESTful API for SIM lifecycle management, real-time usage monitoring, service profiles, roaming profiles and private APN setup.

How do I authenticate with the Com4 API?

With the OpenID Connect client credentials flow. You exchange a client ID and secret for an access token, then use the token on each request.

Can I activate and suspend SIMs in bulk?

Yes. The API is built for fleet-scale work, and bulk operations are covered in the documentation.

Is the API the same as the Polaris CMP portal?

They work together. Teams typically use Polaris CMP for day-to-day visibility and the API to automate repeat tasks inside their own systems.

Which programming languages can I use?

Any language that can make standard HTTP requests, including Python, Java, C#, Node.js, Ruby, PHP and Go.

Does the API support webhooks, and what are the rate limits?

See the API documentation, or contact Com4 support for the current details for your account.

IoT expert Eivind Bøe, Global Sales IoT Manager at Com4
IoT expert Eivind Bøe, Global Sales IoT Manager at Com4

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