Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Scanner won't scan

I messed around with it for hours until I realized it doesn't scan frequencies unless you hold the scan button down. Maybe mine was faulty, but I couldn't find anything in the instructions to indicate it scans without holding the button down. I e-mailed Uniden about the problem, and the company didn't reply. So I sent it back. A scanner that won't scan is virtually worthless.