For the professional installer, contractor, or pro who really wants to be accurate, then getting a signal meter is a no-brainer.

It's a handheld device that pinpoints all 3G & 4G frequencies & bands, displays signal strength in dB, and accurately gives cell tower direction within a 45 to 90-degree spread.

UPDATE: Unfortunately, our signal meter loaner service is no longer available. The Wilson Pro Signal Meter is only available for purchase.