Quectel BG95 Series Hardware Design page 42

Figure 13: Reference Circuit of (U)SIM Interface with an 8-Pin (U)SIM Card Connector
If (U)SIM card detection function is not needed, please keep USIM_PRESENCE* unconnected. A
reference circuit for (U)SIM interface with a 6-pin (U)SIM card connector is illustrated in the following
figure.
Figure 14: Reference Circuit of (U)SIM Interface with a 6-Pin (U)SIM Card Connector
In order to enhance the reliability and availability of the (U)SIM card in applications, please follow the
criteria below in (U)SIM circuit design:
 Keep the placement of (U)SIM card connector as close to the module as possible. Keep the trace
length as less than 200mm as possible.
 Keep (U)SIM card signals away from RF and VBAT traces.
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