I have no problems with mine after the update. I did do a hard reset before I noticed some of the improvements. That might be the key. Blue tooth streaming and calling is louder and clearer. Music is louder, works flawlessly with my 2014 Explorer with My Ford touch. Great update IMHO. I am not rooted. Running stock.
I want to but that's both what's great and bad about android it can take me days/weeks to get my phone set up how I like and doing a hard reset sucks think I'll just wait!
Not everyone needs to do a hard reset but if you aren't noticing any changes like me the hard reset usually works. I know that setting up an Android phone is a pain. It took me about two hours but it was worth it for me.
I'm not having any problems, however, I downloaded the updates before I even started playing the phone. But, I have no lag, no complaints and no issues - I just upgraded from a well used Note 2.
I don't have any problems and see much faster speeds
It did close the mhs loophole and disabled the hidden test menu, but to me, the faster and more stable browsing speeds are worth it to me, since the towers near me are pretty loaded.
No issues with mine, and I did not do a hard reset. I am seeing much faster speeds as well. Wi-Fi was never an issue for me, but it is nice to have 15-18 down and 3-5 up during the middle of the day.