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Old 12-22-2008, 01:04 PM   #1 (permalink)
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Default How do I use GSM rather than CDMA

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I have a Blackberry 8830 World Edition that is CDMA and GSM capable. How do I get it to let me use a GSM sim card. It is defaulting to the CDMA connection.
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Old 12-22-2008, 01:14 PM   #2 (permalink)
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I believe the 8830 GSM connection will not function in North America, only in Europe. It should then default to it when it's able to function.
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Old 12-22-2008, 01:16 PM   #3 (permalink)
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The 8830 GSM is 900/1800 MHz only and will not work in North America (which uses 850/1900).
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Old 12-22-2008, 01:20 PM   #4 (permalink)
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so then there is no way for me to use a cingular gsm chip in it in north america? :(
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Old 12-22-2008, 01:27 PM   #5 (permalink)
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So then there is not.
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Old 12-22-2008, 01:32 PM   #6 (permalink)
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What would be the differences in GSM from America to Europe. Isn't it the same specification?
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Old 12-22-2008, 01:33 PM   #7 (permalink)
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posted above by NJ.
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Old 12-22-2008, 01:58 PM   #8 (permalink)
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Just in case...

North America uses 850/1900 MHz frequencies for GSM

The Rest Of The World uses 900/1800 MHz frequencies.

The 8830 uses the 900/1800 frequencies.

Therefore, the 8830 can't work on GSM in North America.
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Old 12-22-2008, 03:04 PM   #9 (permalink)
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bingo! ^
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Old 12-22-2008, 03:11 PM   #10 (permalink)
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Is there a way to convert the imperial 850/1900 MHz to metric 900/1800 MHz?
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Old 12-22-2008, 03:50 PM   #11 (permalink)
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Old 12-22-2008, 03:51 PM   #12 (permalink)
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Quote:
Originally Posted by clevebb View Post
Is there a way to convert the imperial 850/1900 MHz to metric 900/1800 MHz?
Imperial?... Metric? . . . are they really???
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Old 12-22-2008, 06:13 PM   #13 (permalink)
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Quote:
Originally Posted by clevebb View Post
Is there a way to convert the imperial 850/1900 MHz to metric 900/1800 MHz?
Wow! I didn't know that! If it is really imperial and the other being metric, then shouldn't you be able to convert those? But isn't frequency cycles per second? that has nothing to do with the imperial system or the metric system. But, don't stab me, there might be a fine print somewhere.
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Old 12-22-2008, 06:55 PM   #14 (permalink)
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IT IS A JOKE, and obviously not a very good one..
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Old 12-22-2008, 07:13 PM   #15 (permalink)
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Quote:
Originally Posted by NJBlackBerry View Post
IT IS A JOKE, and obviously not a very good one..
The caps were good, though.
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Old 12-22-2008, 07:35 PM   #16 (permalink)
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oh my, I have just located that wink emoticon. I thought that was a serious question, it made me wonder and zoned me out, LOL!

Last edited by HungrySage : 12-23-2008 at 11:55 AM.
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Old 12-23-2008, 09:02 AM   #17 (permalink)
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I think we need bigger emoticons
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Old 01-02-2009, 08:31 AM   #18 (permalink)
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Quote:
Originally Posted by Rynet View Post
I have a Blackberry 8830 World Edition that is CDMA and GSM capable. How do I get it to let me use a GSM sim card. It is defaulting to the CDMA connection.
If BB8830 uses a SDR (SW defined Radio), then it is possible to program teh radio to 900/1800Mhz.

May be a SW Radio engr can throw some light on this.
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Old 01-02-2009, 05:56 PM   #19 (permalink)
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why would you want to use GSM over CDMA
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Old 01-02-2009, 07:34 PM   #20 (permalink)
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I don't think you are going to re-program the radio chip in the BlackBerry, that might go agaisnt the security of it
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