GSM buzz

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An annoying buzz which only the person you are talking to can hear has been an issue with the GTA02. It has been discussed in several posts on the community mailing list. One early one is here [1]. There is a fix for it, but it requires highly technical hardware skills. The file big-C_rework_SOP_rc2.pdf, which describes the soldering required to fix the buzz, can be found here [2] as can a user's post of their result, here [3].

OpenMoko has a program offering the big-C rework for owners of the model A5 and A6 FreeRunners in the United States and the EU. Please see the mailing list announcement for more details. The A7 model includes the Big-C rework by default.

Note that the "Big C" buzz fix only fixes the internal microphone; a wired mic will still cause buzz [4]. A bluetooth headset may be one solution.

See also


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An annoying buzz which only the person you are talking to can hear has been an issue with the GTA02. It has been discussed in several posts on the community mailing list. One early one is here [1]. There is a fix for it, but it requires highly technical hardware skills. The file big-C_rework_SOP_rc2.pdf, which describes the soldering required to fix the buzz, can be found here [2] as can a user's post of their result, here [3].

OpenMoko has a program offering the big-C rework for owners of the model A5 and A6 FreeRunners in the United States and the EU. Please see the mailing list announcement for more details. The A7 model includes the Big-C rework by default.

Note that the "Big C" buzz fix only fixes the internal microphone; a wired mic will still cause buzz [4]. A bluetooth headset may be one solution.

See also