Restrict certain wifi networks

[Ramakrishnan V G]

In my android phone (Samsung S6 6.0.1), there is no real impact for the Settings->DataUsage->RestrictNetworks option.
To me the emails or app updates are always downloaded irrespective of the wifi nw being marked as "restricted" or not.
Is this expected? What is really the use of this "RestrictedNetworks" option?

 

[B. Diddy]

Welcome to Android Central! Is your mobile data on? If you're on a wi-fi network that you've restricted, it might be using mobile data instead.

 

[Ramakrishnan V G]

No, my mobile data is off in these tests.

 

[B. Diddy]

After selecting the wi-fi network to be restricted, are you also turning on the Restrict Background Data option? From what the little blurb says at the bottom of the Network Restrictions list, it'll only work for wi-fi if you turn on Restrict Background Data as well.

 

[Ramakrishnan V G]

Well in that case please clarify this..
Without enabling "restrict bg data" global setting in the phone, can i restrict data usage only for those hotspot wifi n/ws which are set as "restricted" or "metered" in the DataUsage->RestrictNetworks list?
(bcos I have an unlimited T-mobile data plan, hence no restriction on bg data when connected to my mobile nw. But in those places were my mobile n/w is weak and when connected to hotspot wifi n/ws I want to have the restricted data usage)

 

[B. Diddy]

That's a good question--I'm not sure. It may be that you have to manually toggle Restrict Background Data off if you don't want it to affect your mobile data. Then, if you're on wi-fi only, toggle it back on again.

 

[Ramakrishnan V G]

It may be that you have to manually toggle Restrict Background Data off if you don't want it to affect your mobile data. Then, if you're on wi-fi only, toggle it back on again.

Is there anyways i can confirm this behavior (may be any official product reference or any simple use case to validate this)?