I tried rebooting, and cleaning my port/micro usb sockets.
I cannot download the recent software update because my battery is bellow 20%! Grrrrr what kind of warning or safe features is THAT FROM SAMSUNG!
My A02 is a 1 year old phone. Used only for surfing the web. And having this kind of problem is really frustrating!
I'm using my A32 4g while typing this thread and still working fast and the abused one.