Instruct: Classify the given review into positive or negative sentiment.
Query: Did not work for me.

I followed the directions and tried several variations of antenna placement, but never got it to do anything at all for my cell phone. Instead I've decided to just forward my calls from my cell to my home phone while I am at home. I had high hopes that it would improve my signal to the point of being reliable, but it did not work. I hope better luck for others.SELLER WAS GREAT about the item being returned, and Amazon offers a great service in making sure all transactions go smoothly.