| Occasionally, Telit 3G modem cannot detect the SIM card.
 Workaround:Istruct the modem to assume SIM card is present, i.e. simulate SIM inserted, by adding to the  startup script the appropriate line in function ril_initialize, prior to starting ril-daemon: echo -en "AT#SIMDET=1\r" > /dev/ttyACM0
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