T68i in handsfree mode - GSM-Forum

gogomit · 06-14-2004, 15:21

Hello, I have t68i with strange problem.When I turn on the phone it is in handsfree mode.When i change to normal and restart the phone is in handsfree mode.What can i do?

pda700 · 06-15-2004, 00:17

I posted a possible solution to this recently but one person said it broke his phones. I can't see how this would happen. Perhaps increase the pull-up resistor to 4K7? I hope more people who are experienced with hardware will have a go as it worked for two of my T68is.

gogomit · 06-15-2004, 15:51

Where I must put the 4k7 resistor?

pda700 · 06-16-2004, 00:05

Try connecting a 4K7 resistor between pin 7 (tx) and pin 11 (vcc). Use a spare unconnected data cable first before you hardwire the phone. A 1K resistor worked for me but please be careful.

gogomit · 06-21-2004, 15:23

I solve the Problem with soldering 2k7.Thanks

06-14-2004, 15:21	#1 (permalink)
gogomit Freak Poster Join Date: Jul 2002 Location: Sofia,Bulgaria Age: 47 Posts: 352 Member: 13917 Status: Offline Thanks Meter: 14	T68i in handsfree mode Hello, I have t68i with strange problem.When I turn on the phone it is in handsfree mode.When i change to normal and restart the phone is in handsfree mode.What can i do?

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06-15-2004, 00:17	#2 (permalink)
pda700 Junior Member Join Date: Sep 2003 Location: Sussex, UK Posts: 18 Member: 38567 Status: Offline Thanks Meter: 0	I posted a possible solution to this recently but one person said it broke his phones. I can't see how this would happen. Perhaps increase the pull-up resistor to 4K7? I hope more people who are experienced with hardware will have a go as it worked for two of my T68is.

06-15-2004, 15:51	#3 (permalink)
gogomit Freak Poster Join Date: Jul 2002 Location: Sofia,Bulgaria Age: 47 Posts: 352 Member: 13917 Status: Offline Thanks Meter: 14	Where I must put the 4k7 resistor?

06-16-2004, 00:05	#4 (permalink)
pda700 Junior Member Join Date: Sep 2003 Location: Sussex, UK Posts: 18 Member: 38567 Status: Offline Thanks Meter: 0	Try connecting a 4K7 resistor between pin 7 (tx) and pin 11 (vcc). Use a spare unconnected data cable first before you hardwire the phone. A 1K resistor worked for me but please be careful.

06-21-2004, 15:23	#5 (permalink)
gogomit Freak Poster Join Date: Jul 2002 Location: Sofia,Bulgaria Age: 47 Posts: 352 Member: 13917 Status: Offline Thanks Meter: 14	I solve the Problem with soldering 2k7.Thanks