Both of mine are black (original release one and recently acquired new one - wanted another as insurance since I like this phone so much!). Two reasons for that; my previous phone a Note 2 was white so wanted a change, the second is the white back on the Note 4 feels like a harder plastic whereas the black is softer (especially after some use).
The downside to the white is the sensors and camera are black dots on the front of the white phone.
This is what I use. Great Samsung case and very well made. The back textured area is solid and sturdy. They're out of production now so the grey color is very hard to get except on ebay or if someone is selling a used one. I just bought a brand new one on ebay ($9.99) for my other Note 4 (spare). They do show up once in a while. My friend has a clear slim case on his black Note 4 and it looks very nice too... can't remember who makes it though.
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Yes, the fit is perfect, and it's very tough to find! You just have to search ebay every once in a while. I just happened upon the one I recently bought... well, I specifically searched for it, and got lucky. As soon as I saw it, I snagged it because I knew it wasn't going to last long! $9.99 + 2.62 shipping. Great deal for this since it's so rare. It was actually listed as "New other" so I'm not sure what condition its in. It's on the way, so we'll see.These are so tough for me to find, I'd love to snag one (I currently have the blue one, the fit is absolutely perfect)
I'm ecstatic! The case is brand spanking new! Awesome!It was actually listed as "New other" so I'm not sure what condition its in. It's on the way, so we'll see.