corewerkz

In the past, I’ve tried both aluminum foil and cigarette foil paper to block the iPhone’s GSM/Data interference from entering my car speakers (also notorious with computer speakers). Both worked okay, blocking most, but not all, of the speaker noise (I’d say about 80% was blocked).

Recently, I found a solution that blocks 99% of GSM noise, Static Free Bags (like the kind a new hard drive or RAM is packaged in):

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