# 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](https://help.efento.io/).
* **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](/efento-cloud/adding-devices/nb-iot-sensors.md).
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**](https://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.
{% hint style="danger" %}
**Important:** The SIM card must be renewed before its expiration date. Once a SIM card has expired, it cannot be extended or reactivated.
{% endhint %}
## Roaming network information
Efento-supplied SIM cards are compatible with the operators listed below and will operate in the corresponding countries.
{% hint style="warning" %}
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.
{% endhint %}
#### 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:
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