Instruct: Classify the given review into positive or negative sentiment.
Query: Poor build quality...

I can't comment on the ability of this battery to hold a charge - I just put it into my phone (it does hold A charge...question is, how long?).However, the package arrived already opened (maybe an issue with the vendor) AND the battery itself was put together very poorly compared to the phone's original.When I first installed this new battery, the back of my phone barely closed, and had a visible bulge because the battery isn't constructed with much attention to detail. I stripped off a layer of labeling material and the battery now fits OK. However, it still has some bulging material visible and doesn't fit as well as the original.I didn't see too many options on Amazon for a replacement battery for my 8525 - I didn't want the bulge of an extended battery. But I would gladly pay more money for something that inspires more confidence and doesn't require surgery to fit in the phone.