After I turn on my phone (a Samsung Galaxy I551) the wifi works great. After some times of turning it on and off it gets screwed and when I try to turn it on it displays "Error", without any further specifications. I found a lot in some forums but I couldn't really get any solution.
It is really annoying because I generally don't turn off my phone so now I have to reboot it frequently.
I can't relate this with the opening of some app or something like that :(
Thanks for any help!