If you need a signal booster in the first place, you're probably not looking for a slightly better connection - you need serious improvement, and not only in one room in your home. One of these picks is even designed to improve signal quality in your car. That said, here are our top picks for the best cell phone signal boosters, covering different use cases and price points. The world of cell phone signal boosters isn't the most happening place on earth. There are also different kinds of boosters - directional ones, which target a specific tower belonging to a certain carrier, and omnidirectional ones, which pull in service from multiple towers belonging to multiple carriers, albeit without quite the same strength as the directional variety. Most signal boosters come in three parts: an outdoor antenna, a booster to amplify the signal and an indoor antenna. It's not as simple as dropping an antenna by a window and plugging it in. However, while you can pick up a signal booster from both carriers and third-party manufacturers, these devices are not quite plug-and-play solutions. They're designed to locate the nearest signal and amplify it to support all your devices.

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