How to reduce Wi-Fi interference on your iPad (or iPhone) - Appletell - 3 views
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John Evans on 28 Nov 11"If you feel you're getting more Wi-Fi interference than other iDevice users in your area (considering that if you're in an area with a lot of open networks, a small amount of this type of interference could be normal behavior), you can take a few steps to troubleshoot the problem and reduce the interference you are experiencing."