I bought the Note 3 (T-Mobile) on Saturday (26th). I came from an iPhone 4S on ATT before that (and iPhone 4, before that, and 3G....). Anyway, I was so focused on the sheer size of this beast for the first couple of days that I wasn't aware there was a wifi issue until it wouldn't connect to my work network on Monday (28th). I kept getting the 'unstable connection' and 'wifi disconnected' messages. The only hint of a problem was that I had turned on the wifi calling feature when I first got the phone, and one friend of mine was telling me I sounded garbled, like I was screeching. I called T-Mobile and they told me to return the phone for a new model, which I did yesterday (30th). As soon as I set it up at home, I saw the wifi calling box, and the blue wifi calling icon in the task bar on top, which I didn't see with the first phone. I've had zero complaints about call quality, and I noticed Viber went from dropping after a few seconds to sounding like I was on a regular landline when talking to my friends in South America. Huge difference.
It's not all good news, however. When I went to work today and tried connecting to my work wifi, I got the same messages as the first phone, and it won't connect...even though it says the signal is 'very strong'. Now that I'm home again, I get wifi and wifi calling-no problem. I'm confused? Being that it's getting great reception at home, but not on another network, I'm thinking there's a bug in the software...at least I hope there is.
Regardless, I bought 2GB of data with TMobile this month. I'm hoping they come out with a patch soon, or I'll just pay an extra $10 for unlimited 4G. Having had iPhones since late 2008, this phone has completely blown me away. Don't get me wrong...I don't hate iPhones. I think they're great phones. For me, however, this makes iPhones look like a kids toy. I've gotten used to the size, and will get used to being more careful with it in my pocket, as I think it could be easy to break if you're not careful with your legs bumping into things (like a table, for example).
The Note 3 is like a tablet in my pocket, it's gorgeous, and i'm not giving mine back!
Please, Samsung, fix this wifi issue, and it will be the perfect phone.