P900 Insert SIM Card - GSM-Forum

trinhngoctrung · 05-17-2006, 06:25

My P900 show "Insert SIM card" though SIM is inserted. Can any Brother tell me the solution in this case or send me the Sim ways for P900!
Thanks in advance,

prakashvv · 06-15-2006, 19:18

k750 lcd not work ,change new lcd but same problem ,plz help me

flexible · 06-16-2006, 12:47

u must check sim interface,many p900 are same problem like yours,just clean every contact that sim was involved.1000000000000000000000%

Own · 06-16-2006, 20:31

in gsm/pcn system pin simcard use only 5 leg , you can try check it by check resistance between 5 leg with ground [ use mutitester with resistance range=Rx1k or Rx10k]all 5 leg must have resistance if you check not have resistane all please check line or chip coupling
by this way can check all gsm/pcn system without open phone but see pb. you must open phone for fix it.

05-17-2006, 06:25	#1 (permalink)
trinhngoctrung Freak Poster Join Date: May 2006 Location: Vietfones.vn Age: 60 Posts: 247 Member: 270392 Status: Offline Thanks Meter: 91	P900 Insert SIM Card My P900 show "Insert SIM card" though SIM is inserted. Can any Brother tell me the solution in this case or send me the Sim ways for P900! Thanks in advance,

06-16-2006, 12:47	#3 (permalink)
flexible Junior Member Join Date: Jun 2006 Posts: 1 Member: 294866 Status: Offline Thanks Meter: 0	p900 simcard problem u must check sim interface,many p900 are same problem like yours,just clean every contact that sim was involved.1000000000000000000000%

06-16-2006, 20:31	#4 (permalink)
Own No Life Poster Join Date: Aug 2001 Location: Minsk Russia Posts: 915 Member: 5569 Status: Offline Thanks Meter: 10	trick in gsm/pcn system pin simcard use only 5 leg , you can try check it by check resistance between 5 leg with ground [ use mutitester with resistance range=Rx1k or Rx10k]all 5 leg must have resistance if you check not have resistane all please check line or chip coupling by this way can check all gsm/pcn system without open phone but see pb. you must open phone for fix it.

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06-15-2006, 19:18	#2 (permalink)
prakashvv Junior Member Join Date: Oct 2005 Posts: 20 Member: 195026 Status: Offline Thanks Meter: 2	k750 lcd not work ,change new lcd but same problem ,plz help me