Mobile data always active

[kmf1]

I just discovered that buried, somewhat deep, in Developer options, is an option to keep mobile data always active. Even when wifi is active. In order to have fast network switching. By default, this is enabled. Just wondering if I want this enabled or not. What do you all think about this?

 

[GSDer]

I'd leave it enabled. Even if you have a good Wi-Fi connection you still need a data connection to get MMS. So unless you're worried about exceeding your monthly data limit it's easier to have it enabled.

 

[RedCarp703]

Better to leave it enabled.