Had my note for a week and it would never work right on any AT&T hotspots. It would connect but I would get a notification that the connection failed, basically it seems that the authentication failed as I would get no data despite still showing connected in wifi connections. They gave me a new sim along with about 2 hours of wasted time doing other crap. They eventually put my sim in another handset and it worked. Come to find out that 4 other people have had the same problem in the past couple weeks with their Note. One of which was there at same time and his started working about ten minutes after a sim swap. The other two both got new phones like I did. Something you guys may want to check out, especially if within the 30 days. I spent the past week skimming through and installing apps suggested apps, time to start over.
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Sent from my SAMSUNG-SGH-I717 using Tapatalk