I recently switched to T-mobile and upgraded our router to the T-mobile CellSpot (an ASUS dual-band TM-AC1900 router). When setting up this router, I didn’t want to use the default channels. I wanted to select the optimal channels that my wireless router would use on the 2.4Ghz and 5Ghz bands (not all of our devices support the less congested 5Ghz band). Using the Android app called Wifi Analyzer by farproc, I was able to easily see which channels were the most congested. The analyzer provides a graph of the available channels and displays the detectable wireless networks within your vicinity that are using those channels. It also provides graphs of the signal strength of those networks over time, suggests channel ratings (the more stars a channel has the better the channel, although this is affected by the channel you are currently using), provides a list view of all the detectable wireless networks with their signal strengths, provides a WiFi signal meter of individual networks, and gives you a list view of all devices connected to your wireless network under “LAN neighbors”. After using the app to determine your optimal channel(s), you’ll need to log into your router’s web interface, click on the Wireless or WiFi settings, then select the appropriate channel(s). Wifi Analyzer is a free app for all Android devices running Android 2.3 or later and is available through Google Play.