A few months ago, I switched to T-Mobile for an android phone. Upon doing so, I learned that T-Mobile's service tends to be interrupted (drop to no connection randomly) by EMI from a computer. I've tried my SIM in several phones, and all show the same results. Looking at the network providers in Cincinnati on my phone, when near my computer, shows both AT&T and Cincinnati Bell, and T-Mobile will be missing.
So to solve this situation, I'd like to know what are the best ways to reduce EMI from my computer? I've unplugged all devices from the computer to determine the EMI is coming from the case itself. Unfortunately, the side and front of the case are plastic, instead of metal (with the front door removed).
I'm using a Core i7 in my desktop. I've enabled Spread Spectrum, when does seem to help at times, but the problem still exists. The problem is also only bad while Windows is running, even if the wireless card has been disabled, which I'm guessing is due to the CPU being in use more than during BIOS boot-up.
Should I be looking at replacing the case with a full metal enclosure to help reduce EMI further?