SIM cards manager

Efento NB-IoT sensors can be equipped with special SIM cards that operate across 32 countries. These SIM cards are designed exclusively for Efento NB-IoT devices and can be used to send data either to Efento Cloud or to any external server of your choice.

Regardless of where your NB-IoT sensors report their data, the SIM Card Manager provides you with a complete overview of all your SIM cards and their operational status. Through this panel, you can access key information, including SIM card status and activation / expiry dates.

In addition to viewing details, the SIM Card Manager enables you to activate SIM cards and renew their validity, either manually or automatically, ensuring uninterrupted sensor operation.

The SIM Card Manager is available to users with Administrator or Manager permissions and can be accessed from the Organization settings menu.

SIM cards details

The SIM Card Manager contains detailed information about all SIM cards installed in NB-IoT Efento sensors assigned to your Organization. It can be accessed from the Organization Settings and provides full visibility into the status, usage, and validity of each SIM card.

The following information is available for every SIM:

• ICCID – Unique SIM Card Number The ICCID (Integrated Circuit Card Identifier) is a globally unique number assigned to each SIM card. It allows you to identify, manage, and track SIM cards across your organization.

• Sensor Details – Device Name and Serial Number For each SIM card, the manager displays the name and serial number of the Efento NB-IoT sensor in which the SIM card is currently installed. This helps you quickly determine which device is using a particular SIM, simplifying diagnostics, replacements, or inventory management.

• SIM Status – Active, Deleted, Blocked, or Expired The SIM card manager shows the current operational state of each SIM:

  • Active – The SIM is fully functional, registered in the operator’s network, and able to transmit NB-IoT data. No action is required.

  • Blocked – The SIM has been manually or automatically blocked. It cannot connect to the operator network or send data. Blocking may occur due to security reasons, misuse, or administrative actions. A blocked SIM can typically be unblocked by the Efento support team.

  • Deleted – The SIM has been permanently removed from your account or subscription pool. Deleted SIM cards cannot be reactivated and are no longer usable in sensors.

  • Expired – The SIM’s subscription period has ended. Once expired, the card becomes inactive and cannot send data. The system displays an “Expired” label in addition to the expiration date. Expired SIM cards cannot be reactivated and are no longer usable in sensors

• Activation Date The date on which the SIM was activated and became operational in the NB-IoT network. This helps track subscription cycles, billing periods, and expected renewal timelines.

• Expiration Date The date when the SIM’s service period ends. After this date, the SIM stops transmitting data unless renewed. If the SIM has already expired, the system additionally marks it with an Expired label to ensure users clearly see that action is required.

• Auto-renewal toggle When enabled, the SIM card will automatically renew upon expiration, as long as a valid activation code is available. This helps ensure uninterrupted sensor connectivity without requiring manual renewal.

• Activation Keys Displays the activation keys used to activate or extend a SIM card, along with a complete history of all previously applied codes. This allows you to track renewals, confirm activation actions, and maintain a clear record of subscription changes over time.

Activating SIM cards

Efento NB-IoT SIM cards must be activated before they can transmit data. The activation procedure depends on whether you plan to use your NB-IoT sensors with Efento Cloud or with an external server.

Using NB-IoT sensors with Efento Cloud

If your sensors will send data to Efento Cloud, activation happens automatically during device provisioning. All you need to do is following the steps described in this manual.

The mobile application will handle the SIM card activation automatically. No further steps are required.

Using Efento NB-IoT sensors with your own server or third-party cloud

If your sensors will send data to an external system, SIM cards must be activated manually through Efento Cloud:

1. Go to cloud.efento.io and create an Efento Cloud account and Organization.

2. Enter the activation code you received with your purchase. This unlocks access to the SIM Card Manager and shows how many activation keys are available. Activation codes can be added at any time once the Organization is established. To add a new code, click the Add activation code button.

3. Click Activate SIM card.

4. Enter the SIM card number (ICCID) and PIN2, both printed on the SIM card holder. Because these numbers are long, using a scanner is recommended.

5. Select the activation key you want to use. Activation keys differ in validity duration, so choose the one that matches your needs.

6. Save the settings. The SIM card is now activated and ready to be used in your Efento NB-IoT devices.

Renewing SIM cards

When a SIM card is approaching its expiration date, Efento Cloud will send you a notification via email. These notifications can be customized in the Notifications Manager. To extend a SIM card, you must have at least one available activation key. The renewal process depends on the Auto-renewal toggle for each SIM card:

• Auto-renewal enabled: If the toggle is active, a free activation key will automatically be applied to the SIM card on its expiration date. No manual action is required. You will receive an email confirming that the SIM card has been successfully extended.

• Auto-renewal disabled: If the toggle is inactive, you must manually assign an activation key to the SIM card before it expires. To do this, click Manage Activation Keys in the row of the selected SIM card. This view displays all activation keys associated with the SIM card, including used, currently active, and unused keys. To extend the SIM card, click Attach New Key and select the desired key(s) from the list by checking the corresponding boxes in the Add column. After saving the settings, the SIM card will be renewed using the selected activation key(s) upon expiration. If multiple activation keys are added, the total validity period of the SIM card will equal the combined duration of all selected keys.

Important: The SIM card must be renewed before its expiration date. Once a SIM card has expired, it cannot be extended or reactivated.

Roaming network information

Efento-supplied SIM cards are compatible with the operators listed below and will operate in the corresponding countries.

The countries, operators, and frequency bands listed in the table are for informational purposes only. Efento cannot guarantee that an NB-IoT sensor will operate in every listed location or with every listed operator without prior verification. Network availability, coverage, and technical requirements vary by country and operator. In some regions, additional procedures may be required, such as registering the device with a local operator, before NB-IoT communication can be enabled. Users should always verify network compatibility and any local regulatory requirements before deploying devices.

NB-IoT in Europe

Country	Operator	PLMN ID	Technology	Deployment Bands
Austria	A1 Telekom	23202	NB-IoT	20
Austria	Magenta Telekom	23203	NB-IoT	8
Belgium	Orange	20610	NB-IoT	20
Belgium	Proximus	20601	NB-IoT	TBC
Belgium	Telenet	20620	NB-IoT	20
Bulgaria	A1 Bulgaria	28401	NB-IoT	8
Croatia	Hrvatski Telekom	21901	NB-IoT	20
Czech Republic	T-Mobile Czech	23001	NB-IoT	20
Denmark	Telia	23820	NB-IoT	20, 8
Estonia	Telia	24801	NB-IoT	20
Finland	Telia	24491	NB-IoT	20, 3
France	Bouygues Télécom	20820	NB-IoT	20
France	SFR	20810	NB-IoT	20
Germany	Deutsche Telekom	26201	NB-IoT	8
Germany	Telefónica Germany	26203	NB-IoT	20
Germany	Vodafone	26202	NB-IoT	20
Greece	Cosmote	20201	NB-IoT	20
Hungary	Magyar Telekom	21630	NB-IoT	20, 8
Iceland	Siminn	27401	NB-IoT	3, 7, 28
Ireland	Three (Hutchison)	27205	NB-IoT	20
Italy	TIM	22201	NB-IoT	20
Italy	Vodafone	22210	NB-IoT	20
Latvia	LMT	24701	NB-IoT	20
Liechtenstein	Swisscom	22801	NB-IoT	20
Malta	Melita Ltd	27877	NB-IoT	20
Netherlands	T-Mobile Netherlands	20416	NB-IoT	8
Netherlands	Vodafone Libertel	20404	NB-IoT	20
Norway	Telenor	24201	NB-IoT	20
Norway	Telia	24202	NB-IoT	20
Poland	T-Mobile Poland	26002	NB-IoT	20
Portugal	Meo	26806	NB-IoT	1, 3, 7, 20
Slovenia	A1 Slovenija	29340	NB-IoT	3, 20
Slovakia	Slovak Telekom	23102	NB-IoT	20
Spain	Orange Spain	21403	NB-IoT	20
Spain	Telefónica Spain	21407	NB-IoT	20
Spain	Vodafone	21401	NB-IoT	20
Sweden	Tele2	24007	NB-IoT	8
Sweden	Telenor	24042	NB-IoT	TBC
Sweden	Telia	24001	NB-IoT	20
Switzerland	Swisscom	22801	NB-IoT	20
United Kingdom	Vodafone	23415	NB-IoT	20

NB-IoT outside Europe

Country	Operator	PLMNID	Technology	Deployment Bands
China	China Mobile	46000	NB-IoT	TBC
India	Reliance Jio	405840 (*)	NB-IoT	3
Russia	MTS Mobile TeleSystems	25001	NB-IoT	TBC
Taiwan	Chunghwa Telecom	46692	NB-IoT	8
USA	T-Mobile US	310260	NB-IoT	2, 4, 12
Vietnam	VNPT International	45202	NB-IoT	TBC

FAQ

What does it mean that the SIM card will expire?

Efento NB-IoT sensors are equipped with SIM cards, thanks to which they can send data via the cellular network. When purchasing the sensors, you selected the period for which the SIM card is activated. If the SIM card validity is not extended, it will automatically expire on the date specified above.

What happens when the SIM card expires?

The NB-IoT sensor will not be able to send data to the platform, which will prevent the system from working correctly (collecting measurements, notifications of exceedances, etc.).

What should I do to extend the validity of the SIM card?

To extend the validity of the SIM card, please contact our sales department: [email protected]