ActiveStandby
Melita
Independent network and roaming footprint
2CoreSIM
Resilient IoT connectivity for critical applications
When cold chains are monitored, security systems are controlled, vital data is transmitted or backup systems are activated, connectivity must work even in the event of disruption.
2CoreSIM combines two independent network profiles on a single SIM card and can automatically switch to the alternative connection in case of poor reception, degraded connection quality or technical disruptions.
- Two independent network profiles on one SIM card
- Automatic switching between Melita and Telefónica Deutschland
- Local decision logic directly in the SIM
- No IoT device changes required
- Built for critical IoT applications and backup systems
Designed for lasting reliability
Many IoT solutions still rely on traditional connectivity models that were largely shaped by consumer market requirements. For simple applications, this may be sufficient. For critical IoT processes, coverage alone is often no longer enough. Critical applications require a different connectivity logic: higher resilience, stable data transmission, clear fallback layers and a technical concept that considers disruptions from the start.
That is exactly why 2CoreSIM was developed.
Reliable connectivity is not a commodity. Not for critical IoT.
Two profiles - One SIM - More resilience
2CoreSIM uses an eUICC-SIM with two independent network profiles: a Melita profile and a Telefónica Deutschland profile.
The decision logic sits directly inside the SIM.
If the primary connection is unavailable or not sufficiently stable, the SIM can automatically activate the alternative profile. This means connectivity is not only based on multiple radio networks, but on separate network profiles and independent infrastructures.
2CoreSIM resilient connectivity architecture
Two independent profiles on one SIM. Local decision logic. Alternative connection when it matters.
Live switching
Device
IoT device
eUICC
2CoreSIM · two profiles ready
On-SIM intelligence
SIM applet
Local switching logic
Monitors connectivity quality and triggers profile switching locally, without commands from the network.
Monitoring · MelitaSwitched · Telefónica
Network infrastructure
ActiveStandby
Telefónica Deutschland
Local mobile network infrastructure
Resilience by design
Local decisions in the SIM
No device changes
Static device setup during switching
Critical applications
Backup, logistics, security, infrastructure
Single APNMultiple networksBuilt-in failover
2CoreSIM: beyond traditional roaming
Traditional roaming can make multiple radio networks usable, but it often remains tied to a single home-core model. 2CoreSIM goes one step further.
The solution combines two independent profiles on one SIM card. This creates an additional fallback layer directly in the product design. The SIM decides locally when a switch is required, without companies having to install additional apps or manually trigger profile changes.
Standard IoT connectivity
2CoreSIM
For applications where downtime is costly or risky
2CoreSIM is suitable for applications where stable connectivity is essential for operation. Wherever data must be transmitted reliably, resilient connectivity can create direct operational value.
2CoreSIM is especially relevant for companies and organisations whose applications must remain reliably connected even during network disruptions, fluctuating coverage or technical failures.
Where resilient IoT creates value
Operational monitoring
Logistics and cold chains
Monitoring of high-value goods, containers, pharmaceutical logistics and temperature-controlled supply chains.
Healthcare and vital data
More reliable transmission of vital data, device data and mobile health information.
Industry and machines
Connectivity for sensors, machines, control data and industrial monitoring.
Protection & alerts
Security and alarm systems
Availability for video surveillance, alarm systems, access control and security applications.
Critical infrastructure
Support for waterworks, pumping stations, energy supply, oil and gas pipelines.
Early-warning systems
Connectivity for flood monitoring, wildfire detection and other alerting processes.
Resilience & continuity
Backup systems
Alternative connection layer for technical fallback solutions, router backups and business-critical data paths.
Al-ready data flows
Reliable, secure and continuous data transmission for AI use cases.
Future network layers
Satellite and short-range radio added as connectivity needs grow.
Resilience by design
2CoreSIM embeds reliability directly into the SIM. The solution reduces customer-side complexity because no manual profile control on the device is required.
Key benefits:
Keep critical applications connected with 2CoreSIM
When IoT connectivity is part of your operations, resilience matters.
2CoreSIM combines Crout's IoT and eUICC expertise with Melita connectivity and the network capabilities of Telefónica Deutschland. The result is a resilient solution that helps maintain connectivity through two independent mobile network infrastructures.
Reduce the impact of service disruptions and protect the continuity of your critical applications. Talk to our team to find out whether 2CoreSIM is right for your use case.
