Sprint grants devices access to their network using specific SIM cards that correspond to the LTE modem being used, as well as the category of that modem. Special attention should be paid to matching up the SIM card to the type of modem.

The Cat-3 Sierra MC7354 modem uses a USIM card and the Cat-6 Sierra MC7455 modem uses the ISIM card. The part number printed on the SIM card indicates its type (see chart below for reference).

The 6300-CX Cellular Extender and 1002-CM03 Plug-in Modem use the Sierra MC7354 and the 1002-CM06 Plug-in Modem uses the Sierra MC7455.

NOTE: It is not recommended to move an active Sprint SIM card between modems because the Sprint network may disconnect the connection due to a mismatch between the SIM and the device ID. SIMs should always be activated to the unique device being used.  The ID used to identify the device is the IMEI, which should be printed on the device.  If the MEID is required instead, this can be calculated by removing the last digit from the IMEI.

MC7354 module's UICC cards (USIM)

MC7455 module's UICC cards (ISIM)

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