Wifi settings? - Samsung Galaxy S9+ Questions & Answers

Can anyone explain to me what 'restricting wifi networks' actually does? I cannot seem to notice any difference between when a wifi network is restricted v not restricted! Also, Wifi power saving mode? Does it really preserve battery if its constantly analysing your phone?

If you use Wi-Fi, you can also set your device to restrict data usage on Wi-Fi networks that are mobile hotspots or mobile data. This will help you optimize your data usage by preventing apps from using background data or large downloads on these networks, only download use when Wi-Fi available..

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turn off data while on wifi to save battery?

While on wifi, do I need to turn off Data in order to save battery? I *think* the phone will use the wifi if its available anyway instead of cellular Data but will actually turning off Data while wifi is enabled and connected save battery?
The data is automatically turned off while wi-fi is connected unless you have some rogue app that insists to use cell data connection.
foxbat121 said:
The data is automatically turned off while wi-fi is connected unless you have some rogue app that insists to use cell data connection.
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Note, this is only if "wifi sleep policy" is "never".
Otherwise, it'll go to the cell connection when the screen is off.
The only app I know of right now that can force cell data traffic while wifi is connected is the Market when it does its initial compatibility checks. (Downloads still go over wifi.)

[Q] Automatically turn on WiFi when 3g unavailable?

Hi, I was wondering if there's an app/service that turns wifi on automatically when my mobile network is not giving me a strong data connection (at least 3g). and of course turn it back off when mobile network is available again.
I want to do this because I have an unlimited data plan, and this will save battery and give me a more secure (private) connection.
Anyone knows of such app/service?
Thanks

[Q] Wifi Data Usage

is there a way to see which app uses most data rather than the accumulated wifi bandwidth usage? i think i saw this option before, or i am just wrong.
Try watchdog 3G
afaik, apps should be listed in data usage in settings, however it doesn't is there anyway to reset it?

[Q] Wifi switching to mobile data (and back)

Hi everybody,
I'm facing an annoying problem: when my phone "considers" the wifi signal "too weak", it automatically switches to mobile data (even if the latter are disabled), the result is the mobile frequently drops the wifi connection in some places at home where the signal is a little less intense.
In my phone, options in the advanced settings of the Wi-Fi do not let me choose anything about automatic switching from wifi to mobile data (or such options aren't displayed)...
What can I do?
Is there a way to access "hidden" settings like the ones mentioned?
Thanks for your answers!

Restrict data and wifi for certain app

Hi, I was wondering how exactly to restrict WiFi and cellular data for a certain app. I was easily able to do this with my old phone, but I can't find it in settings.

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