Product

Multi-network SIM: simultaneous access to Telefónica, Vodafone, Orange and MásMóvil

iot.cards multi-network SIMs switch carriers automatically across all four major Spanish operators — Telefónica, Vodafone, Orange and MásMóvil — and across the leading carriers in every European country. The device always attaches to the strongest available network, without forced steering or pre-purchase commitment to a single operator. Built for fleets, solar, alarms, and metering deployments where a network outage equals service downtime.

Key features

Native Multi-IMSI

Multiple operator profiles on a single physical SIM with automatic selection of the best available operator.

Automatic failover

If a network fails or loses coverage, the SIM automatically switches to the next available network.

No single points of failure

Access to all major operators in each country eliminates dependence on a single provider.

Configurable steering

Define network priorities by country, technology or cost. You decide which operator to use first.

Optimized roaming

Direct agreements with local operators instead of traditional roaming for better price and performance.

Improved rural coverage

Access to networks with better coverage in rural areas by combining all available operators.

Technical specifications

IMSIs per SIMUp to 10
Operators per country2-5 depending on country
Failover time< 30 seconds
SteeringBy country, technology, cost
Coverage190+ countries
Technologies2G, 3G, 4G LTE, 5G
Format2FF, 3FF, 4FF, MFF2

Use cases

  • Vehicles and fleets requiring 24/7 connectivity
  • Critical infrastructure with high availability requirements
  • Devices in areas with irregular coverage
  • Industrial applications that don't tolerate disconnections
  • Security and alarm systems
  • High-value asset telemetry
  • Emergency and health services
  • International logistics with multiple countries

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Frequently asked questions

Is this true multi-network or just fallback?
True multi-network. The modem scans available coverage at boot and at intervals, then attaches to the best signal across Telefónica, Vodafone, Orange and MásMóvil in Spain (and the equivalents in each European country). It is not 'soft' steering that prefers one carrier and only switches on outage — it is active selection by signal quality. The difference is most visible in rural deployments and solar.
What is the difference between multi-operator and classic roaming?
Classic roaming depends on a single home operator and the roaming agreements that operator has signed. The multi-IMSI multi-operator SIM carries several profiles on-board and picks the home operator in each country, not the SIM of a visitor. Comparison at /resources/comparisons/multioperador-vs-roaming-clasico.
How many operators are covered per country?
Between 2 and 5 depending on the country. Spain, UK and Germany typically have 3-4. Less dense markets may have 2. The live list lives at /coverage and is updated with new agreements.
How does the SIM decide which operator to attach to?
By steering rules defined at tariff level: priority by country, by technology (LTE-M before 2G), by cost (operator with better termination) or by SLA. Configurable per project during onboarding.
How long does failover take if a network drops?
Less than 30 seconds in most cases: the modem detects signal loss, scans alternative networks and attaches to the next prioritized profile. For mission-critical cases where 30 s is too long, this is combined with two redundant modems.
Does it work better in rural areas than a single operator?
Yes, markedly. When operator A does not reach, operator B usually does — and vice versa. Combining all available operators maximizes the effective footprint.
How is switching between operators billed?
Usage is billed pooled to your iot.cards account regardless of the underlying operator. No surprise roaming charges because the SIM is local in each country through its multi-IMSI agreement.
Is there a penalty for using 5G vs 4G?
No. Pricing is per MB consumed, not per technology. The SIM can use 5G where available at no additional cost.