Figuring out your LTE (4G) connection's type and signal strength can help diagnose network or connectivity problems, but Android's not very helpful with this out of the box. Thankfully, there are apps that will give you a bit more insight, and our favorite is a free download. Signal Spy is a simple, free tool that quickly and easily presents your current mobile network status including the connection technology (EDGE, HSPA, LTE), network band, signal strength, and carrier.

(And no, this isn't a paid post - we get no money from Signal Spy, and we haven't cooperated with them in writing this guide.

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