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Multi-network M2M and IoT SIM cards for the UK

Enhance the performance of your IoT devices with cost-effective and future-proof IoT SIM cards for the UK. Enjoy seamless multi-network connectivity from EE, O2 UK and Three UK on 2G, 3G, LTE and LTE-M

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Trusted by IoT Leaders

Next-generations IoT SIMs for the UK

Superior Coverage
Customize your coverage list to connect to the best or most affordable networks. Get the best coverage from cities like London to the most remote areas.
Improved performance
Onomondo SIMs’ data-saving features minimize both data and power consumption, leading to cost savings and improved performance.
Flexible Solution
Develop, deploy, and operate your IoT devices with absolute flexibility. You’ll only be charged for the devices actively transmitting data.

Connect to local cellular networks from EE, O2 UK and Three UK

Benefit from the world’s smartest IoT network, utilizing non-steered SIMs to amplify coverage, no-code connectors to cut down on data consumption, and comprehensive network insights for easy troubleshooting.

Expand your business

Start in the UK, expand globally

Onomondo makes it super easy to expand your business into new markets. Take your SIMs abroad and automatically connect to local operators with a single network without roaming fees.

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IoT cellular connectivity in the UK

In the UK, IoT cellular connectivity is advancing. While 2G and 3G networks are declining, 4G expansion is strong. The incorporation of LTE-M technology enriches energy-efficient options for diverse applications, highlighting the UK’s dedication to fostering modern and adaptable IoT connectivity solutions.

The Best IoT SIM Cards for the UK

Onomondo M2M and IoT SIM cards are available for the UK in all standard form factors: Mini SIM (FF2), Micro SIM (FF3), Nano SIM (FF4), eSIM (MFF2) and SoftSIM (100% software based SIM).

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Start testing Onomondo for free

Ready to experience next-generation IoT connectivity? Create an account, explore the platform, and start testing Onomondo’s IoT SIM cards for free.

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Why Onomondo?

Optimize coverage

Access 2G, 3G, 4G, LTE-M and
NB-IoT networks across the world.

IoT platform and API

A powerful platform with streamlined SIM management deep insights.

No-code connectors

Reduce data consumption, save power and money with connectors.

Real-time insights

See global traffic, network, and signalling insights, instantly.

Own your SIMs

We’ll transfer SIM keys to a new provider over-the-air on request.

PAYG data

Scale with no SIM fees for inactive SIMs and PAYG data plans.

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From start-up to enterprise, we have a plan that fits your budget and needs, to help you get the most out of our platform.

  • Pay only for the data you use
  • Market rate data costs starting at €0.003/MB
  • Bulk SIM savings with customized pricing
  • Multiple network providers per country
  • Freedom to switch operators at any time

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Frequently asked questions.

With Onomondo you can enjoy the flexibility of no active SIM fees (aka fees for SIMs that aren’t sending data). Instead, you only pay for data in the months that your SIM sends data and generates value for your business.

Onomondo SIMs are delivered activated. We don’t charge fees for SIM activation and have PAYG data subscriptions. You just need to set the APN to “onomondo” and make sure data on roaming networks is enabled on your device (if required) to start using an Onomondo SIM.

We have private static IPs. Onomondo has one global network profile, so when we say the IP address is fixed, it does not change, no matter which RAN the device is attaching to around the world.

With Onomondo, you can see everything from SIM to cloud thanks to our full core integration in over 180 countries.

We offer freedom to leave and our goal is to completely eliminate vendor lock-ins for the IoT industry.

Onomondo is an API-first company. We make everything available with Webhooks and one API.