Contact SalesFree Trial SIM
Free for Builders — Limited Availability

Your next IoT project
starts with a smartSIM.

Kajeet smartSIM
ICCID8901 4103 2841 0096

Get 2 free Kajeet smartSIMs and go from idea to connected prototype in minutes. Multi-carrier. AI-ready. Sentinel account required (free).

What's Included

Multi-Carrier SIM

Auto-switches between T-Mobile & AT&T for best coverage

Full Access to k.Dev

200+ REST endpoints, MCP tools, CLI, and Agent Skills

Dashboard & Analytics

Real-time usage, device health, and content filtering controls

Developer Community

Full docs, sample code, and dedicated dev support

Developer Program

smartSIM Trial SIM Pack

Free - No Credit Card Required

Everything you need to prototype your IoT solution with real cellular connectivity.

Kajeet Multi-IMSI smartSIM

500 MB Data
Free cellular data on multi-carrier network
Full Access to SentinelOS
Sentinel Web, REST API's, MCP, & CLI.
60-Day Trial
Full access — no credit card required
Multi-Carrier
AT&T + T-Mobile + Verizon — automatic switching
Kajeet smartSIM
500MB On Us

• Sentinel Account Required

No credit card • Ships in 2–3 days • US addresses • Sentinel account required (free to sign up)

What builders are creating with Kajeet smartSIM

Connected Healthcare

Remote patient monitoring, connected ambulances, and real-time health telemetry over secure cellular.

K-12 Safety

Content filtering, vape detection, GPS tracking for student devices and buses.

Fleet & Logistics

GPS tracking, geofencing, route optimization with nationwide multi-carrier coverage.

Industrial IoT (IIoT)

Predictive maintenance, asset tracking, and environmental monitoring across manufacturing floors.

Robotics & Drones

Autonomous navigation, remote command and control, real-time video uplink over LTE.

Smart Retail

Connected POS, inventory sensors, digital signage, and foot traffic analytics at every location.

Frequently Asked Questions

What devices work with the Dev SIM?
Any unlocked device with a standard SIM slot — routers, gateways, IoT modules, tablets, or even phones. Supports 2FF, 3FF, and 4FF form factors. SIM Cards are 3-in-1 removable SIMs supporting Mini, Micro, and Nano form factors.
What happens after 60 days?
Your trial converts to our developer tier. We'll reach out before it expires with options to continue at discounted developer pricing.
Is this real cellular data?
Yes. This is a production-grade Kajeet smartSIM with live multi-carrier connectivity (T-Mobile and AT&T). Same SIMs our enterprise customers use.
Can I use the API and MCP tools during the trial?
Absolutely. Full access to the 200+ REST API operations, 11 grouped MCP tools with 82 actions, CLI, and Agent Skills. No feature restrictions.
Do I need to return the SIM?
Nope. It's yours to keep. Build something amazing with it.
What if I cannot get my SIM card to connect?
The Kajeet IoT Connectivity Support Team is ready to help. If you have any problems getting or maintaining a wireless connection, please contact us.