How to Scan for network interference

1 Install a free app

Search for and install wi–Fi explorer Lite from the mac App Store. when you open the app, it will display a list of all detected wi–Fi networks on the 2.4Ghz and 5Ghz bands. Click 2.4Ghz.

2 Interpret the graph

Beneath the list is a graph of the channels each detected network is using. the currently selected network is highlighted. the higher the curve on the graph, the stronger the signal.

3 Change and review

If overlapping networks are on the same channel, follow the advice on the previous page to change your 2.4Ghz wi–Fi channel to 1, 6 or 11, say. wait for your mac to reconnect and recheck.