Hello guys, well i have a bit of a strange problem, i have an unbranded HTC M8, i had it with 4.4.2 stock rom and everything was alright. I just upgraded to 4.4.3 (through OTA), after that, i did a wipe data/wipe cache from recovery to start from scratch, and now everytime i enable wifi the arrows beneath the wifi simbol stay lit all the time. Now i haven't installed any apps, i disabled facebook, google+ etc, i haven't even added an email account so there's nothing that could be using the network. I checked mobile data usage and there's nothing substantial there, so i really don't know what to try anymore. Any ideas? Thanks in advance.
EDIT: Android OS shows increasing data usage. What's that exactly?!