The Galaxy Note 8 weighs 6.84 oz (194 grams). This phone is certainly on the heavy side of things when it comes to mobile phones. The average weights for mobile phones is around 5.4 oz (156 g) according to phone arena website. I mean, it's close to 200 grams! I know that many of you might never paid attention to the weight, but at 200 grams, I'm sure that some people will find it uncomfortable holding it in their hands for a long period of time, like when talking or playing games, especially in long conversations where your hands it held in upright position.
This is one negative aspect of the Note 8 that I think is worth mentioning. I know that this is a big phone that boasts a large screen,, and even with its bezel-less screen, it's still heavy. Just for comparison: The Galaxy S8 weights, 155 g (5.47 oz), the iPhone 7 Plus weights 188 g (6.63 oz), the LG G6 is 163 g (5.75 oz) and Sony Xperia XZ Premium weighs 195 g (6.88 oz). So the Note8 isn't the first phone that wants to break the world record in being the heaviest. In fact, it weights like the Xperia XZ Premium, slightly more (194g vs 191g) but the XZ Premium is smaller than the Note8.
I've read that people brought up the weight after they went over the official specs on Samsung's website. I think the reason for that is because the phone boasts a very large 6.3-inch display and people wonders what the implications of this on the phone's weight. The thing is that the weight is nothing that you can understand unless you hold the phone in the hand and talk with it for a long period of time. I usually find the weight to be disturbing, but I usually just switch hands when talking for a long time.
When gaming it's not such a big issue because you put your hands on your legs to support the weight, but if you play handheld while holding your hands in the air, you will feel the weight after some time, especially with heavier phones.