Noticed today that my new gs4 is almost always downloading something when connected to wifi. No data transfer at all when running on mobile data. When i look at wifi settings i can see that it is scanning for networks almost at the same interval that the orange dl arrow comes un. Its on for a sec then off for a sec. really annoying..so is it the scanning that is making the orange arrow appear? and why would it be scanning constantly if i have 4 bars and already connected to wifi??? thx for help