Seeing as Project Fi does run on both Sprint and T-Mobile here in the US, some Project Fi users might be a bit interested to see what network they are actually on when using their phone. And with Signal Spy you can do just that. You are able to choose whether you have a persistent notification showing you what network you are on, or just have it appear when you open the app. Signal Spy allows you to swap between networks too. So if you’re on Sprint and would rather be on T-Mobile, Signal Spy makes it easy for you to switch, and vice versa. In addition to showing you what carrier you are on, it also shows you what WiFi network you are on, and it will also keep a history of the networks you’ve connected to and when.
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On top of seeing which network you are on, you can also see what band you’re using, as well as whether it’s 2G, 3G or 4G LTE. As well as your signal strength, which can play a pretty big role in your battery life, actually. For WiFi, it’ll show you the frequency, channel, signal strength and speed. There’s not much else to the Signal Spy app, it’s a pretty simple app that does just one thing. But it does it pretty well.
It’s worth noting that this app will only work if you are on Project Fi. Seeing as this is built for Project Fi (and no other network runs off of two existing wireless networks), it won’t work if you use it on a phone that has a Sprint, T-Mobile, Verizon or AT&T SIM card, for obvious reasons. The Signal Spy app is available for free over on the Google Play Store. It is pretty small, weighing in at about 5.3MB. In addition to that, it does have some in-app purchases ranging from about $0.99 to $5. So it won’t break the bank, but it will help support the developer.
Signal Spy does have a beta track, which you’ll need to sign up for the Google+ beta community to get in on that. Definitely worth checking out.