SIMCOM SIM Problem
Discussion in "Embedded GSM Development" started by compaq Jan 14, 2013.
Mon Jan 14 2013, 02:21 pm
hi i am having the problem with sim908 , if i change the sim while the modem is on i have to reset modem to switch to the other sim,
is there any way that i can change the sim while modem is on without resetting the modem.
thank you
is there any way that i can change the sim while modem is on without resetting the modem.
thank you
Mon Jan 14 2013, 08:30 pm
@ compaq
i think it is necessary to reset the modem to pick a new sim that you inserted
as you can't change a sim when cell is in on condition
i not check it it is my thinking
i think it is necessary to reset the modem to pick a new sim that you inserted
as you can't change a sim when cell is in on condition
i not check it it is my thinking
Mon Jan 21 2013, 06:21 am
its not advised to change sim when modem is on as it will not work. Have you ever changed sim card when your phone is on? that might answer your question.
Mon Jan 21 2013, 10:49 am
hi
ajay thank you for your answer, the problem is this when i reset the modem using the power key and GPS in 908 also gets reset i mean i see no fix location, this is the issue, is there any way that i reset the GSM modem and ist gps remain fixed. if any one knows the solution plz help
thank you
ajay thank you for your answer, the problem is this when i reset the modem using the power key and GPS in 908 also gets reset i mean i see no fix location, this is the issue, is there any way that i reset the GSM modem and ist gps remain fixed. if any one knows the solution plz help
thank you
Sun Feb 03 2013, 04:52 am
you can try to turn radios off and then enable again. I never tried that way so I am not sure if it will work.
try at+cfun command see its description and try it.
try at+cfun command see its description and try it.
Mon Feb 04 2013, 02:12 pm
hi
thank you ajay, i tried that way, by turning of radios and then turn on again it work like this
thank you ajay, i tried that way, by turning of radios and then turn on again it work like this
Mon Feb 04 2013, 02:30 pm
AT+CFUN=0 // minimum functionality with rf and sim off
then if u send AT+CFUN = 1 // Full functionality if picks up new sim inserted // the default setting of GSM simcom908
then if u send AT+CFUN = 1 // Full functionality if picks up new sim inserted // the default setting of GSM simcom908
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