C139 GSM900/1800 to 850/1900 convert? - GSM-Forum

Handy-Freak · 11-05-2007, 18:46

Hello,

i would like to know if anybody knows how to convert c139 from european 900/1800 band to american 850/1900 band.

Thanks in advance,

Jason

elkawasmy · 11-05-2007, 19:09

look at the picture attached

InfinityHelp · 11-05-2007, 20:51

hello!

this problem is discussed in our FAQ section
C139 850/1900 <-> 900/1800 band

kasamiko · 11-06-2007, 02:56

Quote:

Originally Posted by InfinityHelp

hello!

this problem is discussed in our FAQ section
C139 850/1900 <-> 900/1800 band

But he want it the other way around..

900/1800 to 850/1900....

you can move the resistor without changing the filters...or try to put a jumper wire for filter..

Handy-Freak · 11-07-2007, 21:41

OK, but what about the band select in the phones menu??

Any Help?

InfinityHelp · 11-07-2007, 22:16

hello!

you cant do this via menu. you must modify hardware

kasamiko · 11-08-2007, 04:43

Quote:

Originally Posted by Handy-Freak

OK, but what about the band select in the phones menu??

Any Help?

There is NO MENU item for BAND SELECTION on the phone..

You have to open the phone and MOVE the resistor to change band..

Regards

11-05-2007, 18:46	#1 (permalink)
Handy-Freak Major Poster Join Date: Nov 2003 Location: Dominican Republic Age: 41 Posts: 41 Member: 44347 Status: Offline Thanks Meter: 1	C139 GSM900/1800 to 850/1900 convert? Hello, i would like to know if anybody knows how to convert c139 from european 900/1800 band to american 850/1900 band. Thanks in advance, Jason

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11-05-2007, 20:51	#3 (permalink)
InfinityHelp Product Supporter Join Date: May 2005 Location: uae Posts: 29,245 Member: 148515 Status: Offline Thanks Meter: 19,534	hello! this problem is discussed in our FAQ section C139 850/1900 <-> 900/1800 band

11-07-2007, 21:41	#5 (permalink)
Handy-Freak Major Poster Join Date: Nov 2003 Location: Dominican Republic Age: 41 Posts: 41 Member: 44347 Status: Offline Thanks Meter: 1	OK, but what about the band select in the phones menu?? Any Help?

11-07-2007, 22:16	#6 (permalink)
InfinityHelp Product Supporter Join Date: May 2005 Location: uae Posts: 29,245 Member: 148515 Status: Offline Thanks Meter: 19,534	hello! you cant do this via menu. you must modify hardware