6G will not carry a serious commercial IoT deployment until well into the 2030s, and the devices you ship today will still be in the field when it does. For anyone running trackers, meters or cameras across a fleet, that gap is the real IoT connectivity problem: not what comes next, but whether what you install now can move when the networks underneath it change.
The 6G hype cycle, in plain terms
Every generation of mobile technology follows the same pattern. Years of speculation, then a standard, then a slow rollout where coverage starts in cities and takes a decade to spread.
6G is still in the first phase. Prototypes are experimental, standards are not expected until around 2028, and wide deployment lands in the 2030s. The speeds and latency figures quoted today are analyst guesses, not network realities. None of that is a reason to ignore it. It is a reason to stop planning around it.
For an operations or IT team the practical question is simpler: will the SIMs and devices I deploy this year still connect in five or ten years, on whichever networks are strong where they live?
What the landscape looks like now
Most industrial IoT traffic today runs on 4G LTE and LTE-M, the low-power wide-area variant of LTE built for devices that send small amounts of data over long battery lives. 5G standalone networks are growing, but coverage is uneven and modules that use them well are still maturing in cost and availability.
Meanwhile, many enterprises still run separate operator contracts per region, with a portal per operator and a spreadsheet holding it all together. That model ages badly. Every network sunset, every roaming dispute and every hardware refresh lands on the same small team.
What cuts across all of this is a demand for connectivity that is reliable across borders and transparent enough to manage over a long device lifecycle. Devices in the field often outlive three phone generations. The connectivity has to outlive them too.
Why waiting for the next generation costs money
It is tempting to defer connectivity decisions until the next big standard arrives. In IoT, waiting compounds three costs.
- Technical debt. Single-network SIMs locked to one operator get harder to manage as that operator's coverage and commercial terms shift.
- Security exposure. Devices stuck on ageing network paths receive less attention from the operators sunsetting them, precisely when firmware support is needed most.
- Operational fragility. When a network retires a band or a roaming agreement lapses, devices go dark and someone drives out to a site to swap a SIM.
The way out is not predicting which standard wins. It is designing for uncertainty: hardware and SIMs that can change networks without a site visit.
eSIM and remote provisioning: the practical hedge
An eSIM is a SIM that can be reprogrammed over the air, so a device can move to a different network or profile without a physical swap. Remote provisioning means a new profile is pushed to the device through its existing connection, with no truck roll.
For a fleet, that changes the economics of a network sunset. Instead of recovering thousands of devices, you push a new profile to them. The GSMA, the body that sets SIM standards, continues to extend the eSIM specifications to cover IoT use cases, including devices that lack a screen or keyboard. Adopting eSIM-capable hardware now keeps those migrations cheap later.
The related hardware trend, the integrated SIM or iSIM, moves the SIM function onto the device's own chip. It is worth watching rather than betting a whole estate on today, but it points the same way: the network identity is software, not plastic.
Multi-network SIMs: resilience you can buy now
A multi-network SIM carries the credentials needed to register on several networks, typically all the networks available in a country or region, rather than one. The device attaches to whichever network has the strongest signal where it sits.
The difference between steered and unsteered roaming matters here. A steered SIM is held on a preferred network even when a stronger one is available nearby. An unsteered multi-network SIM lets the device sit on the best signal and move only when that signal fades. For a water meter bolted to a wall in a rural patch, or a payment terminal in a basement shop unit, that is often the difference between reporting and not reporting.
Coverage gaps do not respect contract terms. A multi-network SIM treats the whole local operator landscape as one pool of signal, which is the closest thing to insurance a radio link can have.
Visibility turns SIMs into managed assets
Future-proofing is not only a hardware decision. A SIM that is on the wrong network, or roaming when it should not be, looks fine in the field and costs money every month.
So SIMs need a management layer: activation, suspension and tariff changes handled in the same place the devices themselves are managed, with a view of which network each SIM is on and what its signal looks like. On RAAD™, the DigitalSom IoT platform, SIMs sit beside the devices they are fitted to, so a drop in signal shows up next to the asset it affects rather than in a separate billing tool nobody watches. Drop-offs get caught before the device goes dark.
Pooled data helps here too. When data is shared across the estate, a meter that talks constantly does not strand a payment terminal's allowance, and SIMs move between tariff shapes as the fleet's usage changes.
What to actually do this year
A short, concrete sequence beats a strategy document:
- Audit every SIM and note which network it locks to, which contract governs it and how it would be changed if that network faded.
- Move new deployments to eSIM-capable hardware and multi-network SIMs, so a future profile change is a software push, not a site visit.
- Consolidate SIM management into the platform where the devices are already monitored, so connectivity faults and device faults are triaged together.
- Treat data as pooled across the estate, so usage patterns can shift without renegotiating per-device allowances.
None of that depends on what 6G becomes. It depends on keeping your options open.
Common questions
Will 5G replace 4G for IoT devices soon?
No. 4G LTE and LTE-M carry most industrial IoT traffic and will continue to for years, because they are cheap, well covered and well understood. 5G rollout is real but uneven, and module costs are still settling. Plan for devices that can use both.
Is eSIM worth it for low-cost devices?
The hardware premium has fallen a lot, and the cost it removes is the site visit. If a device will be in the field for more than a few years, the ability to change network by remote provisioning usually pays for the difference the first time a network shifts.
What is multi-IMSI?
A multi-IMSI SIM stores several network identity profiles on one card, so it can present itself as a subscriber of more than one network. It is the mechanism behind many multi-network SIMs: if one network's credentials stop being useful, another profile takes over without a swap.
How Cloud-IQ approaches this
Cloud-IQ is the DigitalSom group's global IoT connectivity business, and the answer to future-proofing here is not a promise about 2030. It is one SIM that works across 800+ mobile networks in 190+ countries, unsteered so devices stay on the strongest signal available, with tariffs built around the countries and data your fleet actually uses. SIMs are managed on RAAD, the DigitalSom IoT platform, alongside the devices they connect, with engineers on call 24/7 who can tell a SIM fault from a network fault. Request a quote.
