IoT SIM Cards

We offer classic SIM cards, which are inserted into a slot in the device, in several form factors: 2FF (Mini SIM), 3FF (Micro SIM), 4FF (Nano SIM). For certain applications, we also have combined formats, such as 2FF/3FF (Doublecut) and 2FF/3FF/4FF (Triplecut). All these forms are widely used, easy to handle, and supported by numerous hardware components. 

For projects where special robustness is required, we have the chip SIM (MFF) in our portfolio: a soldered SIM that functions exactly the same way as a normal SIM card. This chip is typically supplied in large quantities, vacuum-packed in a so-called reel. 

During production of the IoT device, the chip can be soldered directly onto the circuit board at the customer's site. In addition, it is possible to seal it and protect it from corrosion. This capacity makes the chip SIM the perfect option for devices that are outdoors, are constantly in motion, or need to have a long service life. It also offers special security: Since it is permanently installed in the device, it cannot be removed in the event of theft – and thus, it continues to report the location.

In some projects, it is not possible to swap SIM cards if, for example, the network operator is to be changed. This situation may happen because the location is difficult to access, the sheer number of devices makes swapping uneconomical, or regulatory conditions in the country of deployment require using a profile from a local network operator. Such scenarios are where the eSIM can offer a solution. The eSIM profile, which defines the network operator, can be exchanged wirelessly. It is usually installed in the device as a chip SIM (MFF). Telekom will provide you with the necessary infrastructure on request.

Some IoT projects have special requirements. For example, the end device should be particularly small and simple or especially robust, or minimum energy requirements are needed for a long, maintenance-free operating time. Cost considerations also regularly play a role, requiring a focus on the essentials – less is more.

 For this reason, Deutsche Telekom, together with renowned partners, has developed the nuSIM. SIM functions that are not required for IoT communication were strictly omitted and the result integrated directly into the modem chip. This design makes the nuSIM invisible, no longer involving any separate hardware and having no associated logistics and no requirement for space in the end device. Instead of plastic cards, we supply you with ready-made data sets (known as profiles) that are loaded into the end devices using a digital process. This feature makes the devices ready for immediate use.