You may need to operate the device with a SIM card adapter. The SIM card holder of the PTCarPhone is designed for mini SIM cards (2FF). Of course, the PTCarPhone can also be operated with micro (3FF) and nano SIM cards (4FF) and the corresponding adapters. However, it is essential to ensure that the SIM card used with the adapter also corresponds to the correct dimensions of a mini SIM card (2FF). This applies to the length and width as well as the thickness of the adapted SIM card.
If this does not resolve the error, please contact support.