I was having a terrible time with my note restarting. I factory reset my phone took out my SIM card and then my sd card too. It would still start restarting and once it began the recycling I would have to remove the battery to get it to stop and, even then, it would often start recycling as soon as I put the battery back in and powered it on. I saw something about a bad connection with the battery once and dismissed it because it started happening after I had the phone for four months and I saw that my battery was fine. After a couple of months of this it got so bad that it was restarting 8 - 10 times a day but I noticed that it was really bad once my battery was below 50%. I decided to try to keep it charged above that and the next day I didn't have a single problem. I let it go below 50% the next day and it restarted again. I then bought a new battery and it's been two weeks now and not a single restart. I think the battery had just gone bad and my phone couldn't compensate for the power problems of a bad battery. Wish me luck that I don't have any more problems.