I was using USB tethering today and it was working perfectly. I unplugged my phone, left, and returned. I plugged in my phone and when I activated USB tethering it said "error" or gave a "limited" connection. Using a hotspot gave me a limited connection as well... My phone is unrooted and running stock 4.4.2. I tried uninstalling the drivers and reinstalling and it has not worked! pls help