IoT eSIM

IoT eSIM — The smarter way to connect industrial devices

An IoT eSIM (embedded SIM) isn’t a rebranded phone SIM. It’s designed for machines: routers, gateways, sensors, BMS controllers, CCTV systems, tracking units and anything that needs reliable data connectivity without intervention.

Where a consumer SIM is tied to one network and one device lifecycle, an IoT eSIM is built for industrial deployments that stay in the field for years. It gives you multi-network connectivity, remote management, private IP options, and long-term lifecycle durability.

What makes an IoT eSIM different?

Traditional SIMs were created for phones and short product lifespans. IoT eSIMs were engineered for critical infrastructure.

Key differences:

• Multi-network: connects to EE, Vodafone, O2, and Three — whichever signal is strongest.

• Long lifecycle: stays active for years; ideal for fixed assets and remote installations.

• Flexible form factor: embedded MFF2 eSIM or removable SIM depending on your hardware.

• Built for data, not voice: supports private APN, fixed IP, and secure VPN access.

• Remotely switchable: change network provider without visiting the site (no SIM swap).

In short: IoT SIM/eSIM = infrastructure-grade connectivity.
Phone SIM = consumer convenience.

Who uses IoT eSIMs?

Perfect for organisations deploying connected devices at scale:

• Industrial routers (especially Teltonika)

• CCTV and ANPR connectivity

• Remote Building Management Systems (BMS), HVAC and plant control

• Smart buildings and energy optimisation projects

• Asset tracking, fleet telematics and vehicle connectivity

• Remote access to devices using fixed IP / private APN / VPN

Whether you have one site, or a thousand, an IoT eSIM keeps everything online.

Why your devices need an IoT eSIM

Always-online connectivity

Our eSIMs automatically switch across the major UK networks. If one network falls over, your device doesn’t.

Fixed IP and remote-access ready

If you need to log into the device, not just send outbound data:

• Fixed public IP

• Private IP SIMs

• Secure APN

• VPN-ready

Choose what fits your security and access model.

Built for industrial scale

Manage 1 or 10,000 devices using our portal:

• Usage analytics

• SIM activation/deactivation

• Alerts on unusual data activity

• API access available

You stay in control.

Flexible form factors

Your device decides what it needs:

• Physical SIM (2FF/3FF/4FF)

• Embedded IoT eSIM (MFF2) for vibration-heavy or sealed devices

No more on-site SIM swapping.

Works perfectly with Teltonika routers

We validate every SIM type with Teltonika hardware.

• Automatic APN provisioning

• RMS VPN and monitoring compatible

• 3G / 4G / 5G / RedCap support

You plug it in, and it just works.

How to choose the right IoT eSIM plan

1. Connectivity coverage

Do you need:

• UK-only multi-network roaming?

• EU/global roaming?

• Private network or fixed IP access?

Tell us the install location, and we’ll advise.

2. Data behaviour

Is it low data (BMS telemetry, I/O polling) or heavy data (CCTV streaming)?

3. Access model

What’s required?

4. Form factor

• Plug-in SIM

• MFF2 IoT eSIM

5. Scale and lifecycle

Do you need:

• SIM portal and API

• Bulk provisioning

• Data alerts and usage policies

Benefits at a glance

• Multi-network IoT eSIM — strongest network always selected

• Fixed IP / private APN / VPN-ready connectivity

• Flexible data plans and roaming options

• Form factors: physical SIM or embedded eSIM (MFF2)

• Portal and API for SIM lifecycle management

• UK-based support team who actually understand industrial IoT

Why Millbeck?

We don’t just sell SIMs.
We sell connectivity that works.

Millbeck is one of the UK’s longest-serving IoT/industrial connectivity specialists. We supply the router, antenna, SIM, configuration and support. If something drops offline, we’re not a call centre reading a script — we diagnose the router, antenna and APN setup with you.

Most providers sell SIMs.
We deliver end-to-end connectivity.

Typical real-world deployments

Remote agriculture (irrigation telemetry)

RUT241 + IoT eSIM + private APN
Data flows back to HQ every 10 minutes. No site visits required.

Smart building control (BMS / HVAC)

Multiple routers on different floors.
WAN failover + private APN + VPN into controllers.

Remote CCTV / ANPR

RUT956 or RUTX50 + fixed IP SIM
Maintenance team logs in remotely — no engineer callouts.

Frequently Asked Questions

What’s the difference between an IoT eSIM and a standard SIM?
An IoT eSIM is built for devices, remote access and long lifecycle deployments. A phone SIM is designed for handset use.

Can I use an IoT eSIM in a Teltonika router?
Yes. All our SIMs (physical or eSIM) are validated with Teltonika. Plug in, select the APN, done.

Do you offer fixed IP?
Yes — fixed public IP or private IP with VPN depending on the security requirement.

Do your IoT SIMs use multiple UK networks?
Yes. They automatically attach to the strongest available carrier.

What if the device doesn’t send data for weeks?
No problem — our plans are designed for intermittent/low-data applications.

Ready to connect your devices?

Speak to someone who understands industrial IoT, not a generic telecoms reseller.

Millbeck IoT Connectivity Team
📞 0113 548 0770
✉️ sales@millbeck.co.uk

Tell us:

• where your device is,

• what router you’re using,

• whether you need remote access.

We’ll specify the right IoT eSIM and plan without wasting your time.