Requirements for eSIM
An embedded-SIM (eSIM) or embedded universal integrated circuit card (eUICC) is a form of programmable SIM card that is embedded directly into a device. The surface mount format provides the same electrical interface as the full size, 2FF and 3FF SIM cards, but is soldered to a circuit board as part of the manufacturing process. In machine to machine (M2M) applications where there is no requirement to change the SIM card, this avoids the requirement for a connector, improving reliability and security. An eSIM can be provisioned remotely; end-users can add or remove operators without the need to physically swap a SIM from the device.
In order to use eSIM with Teltonika FM devices, some basic requirements must be met.
1. eSIM dimensions
Must match standard MFF2 eSIM size:
2. eSIM pin-out
There are two default eSIM pin-outs:
The only difference in pin-outs is the IO pin – 2 or 3. Both versions of pin-outs are suitable for devices with eSIM.
3. Requirements for eSIM packing reel:
13“ in diameter.
4. Compatibility with Teltonika FM devices
| Project | Current SIM configuration | Possibility to solder eSIM? | Possibility to have eSIM + another SIM? | |
| FMB110/FMB120/FMB130/FMB140 | Micro SIM | Yes | Yes. Micro SIM + eSIM | |
| FMB122/FMB125 | Dual Standard SIM | Yes | Yes. Standard SIM + eSIM | |
| FMU120/FMC120/FMM120 | Micro SIM | Yes | No | |
| FMU122/FMC122/FMM122 | Dual Standard SIM | Yes | No | |
| FMU125/FMC125/FMM125 | Dual Standard SIM | Yes | No | |
| FMU126 | Dual Micro SIM | Yes | No | |
| FMU130/FMC130/FMM130 | Micro SIM | Yes | No | |
| FMB202/FMB204/FMB206 | Micro SIM | Yes | Yes. Micro SIM + eSIM | |
| FMB207/FMB208 | Micro SIM | Yes | Yes. Micro SIM + eSIM | |
| FMB900/FMB920 | Micro SIM | Yes | Yes. Micro SIM + eSIM | |
| MTB100 | Micro SIM | Yes | No | |
| FMB964/FMB962 | Micro SIM | Yes | Yes. Micro SIM + eSIM | |
| FMC640/FMM640 | Dual Standard SIM | Yes | Yes. 2 x eSIM Possible | |
| FMB640 | Dual Standard SIM | Yes | Yes. Standard SIM + eSIM | |
| FMB001/FMB010 | Micro SIM | Yes | Yes. Micro SIM + eSIM | |
| FMB002/FMB020/FMB003 | Nano SIM | No | - | |
| FMM001/FMC001 | Micro SIM | Yes | No | |
| FM3001 | Micro SIM | Yes | No | |
| FM36M1 | Standard SIM | Yes | No | |
| FM3612 | Standard SIM | Yes | No | |
| FM6300 | Dual Standard SIM | Yes | Yes. 2 x eSIM Possible | |
| FMT100 | Micro SIM | Yes. Special Hardware | No. Only 1 SIM type can be used (ether eSIM or Micro SIM) | |
| FMP100 | Nano SIM | Yes | Yes. Nano SIM + eSIM | |
