"Just go to WiFi->Settings->Advanced on your Note 3, and disable Auto Network Switch - solves this problem like a boss."
This works, thanks. But what's it for? Looks like they really messed up on 4.3. It's just full of bugs.
I tried to turn off Auto Network on my Samsung Galaxy S3 phone(Verizon) but I can't seem to locate the option under Wireless => Advanced settings. I also tried the dial method you mentioned but all I get is a Verizon message telling me that the call can't be completed as dialed. What am I doing wrong?
I have the same problem. My sisters iphone 5c works fine, my laptop works fine, and the wired internet is speedy, but even with the auto network setting turned off, my galaxy s4 still refuses to connect. I've had it on the same network for months and just realized that i'm no longer connecting.