So since my S7 updated yesterday I noticed an issue in how the phone uses data (both 4G and wifi work fine). It used to be that when I came to a wifi network my 4G would turn off, as indicated by the 4G symbol in the top bar going grey. However since the update I see that 4G is still highlighted. As I'm browsing on my phone it looks like most data is going through Wifi (I can tell by the up/down arrows highlighting) but occasionally the 4G arrows light up too. So it seems that even when I'm on wifi some data is being sent over 4G. I know I can manually turn off cell data, but is there a way to tell my phone to only use wifi when wifi is available?
