Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I have 3 - they are ALL BAD!!

I have 3 different versions of this IBM headset phone - various models. Each time I thought they would improve. They didn't! Please head my advice - don't waste your $$! It's a great idea, and nothing out there like it, but these phones don't hold a charge after a month or so, the noise interference is awful, and they randomly have static on the lines for no apparent reason. I wish they would work for my home business - but they simply don't work well. Just don't do it!!