What is Wi-Fi Sharing on Galaxy S20, S10, S9, Note

Wi-Fi Sharing is a nice feature you can find in Mobile Hotspot settings on Samsung Galaxy devices

As we wrote in one of our previous articles, mobile hotspot makes your Android phone work as a wireless router. In this mode mobile data interface works as WAN and Wi-Fi as LAN respectively.

But Samsung added a nice expansion feature to Mobile Hotspot mode in their flagship Galaxy devices — it is called Wi-Fi sharing.

How it Works

It works as follows. In the case if one of the wireless networks (which your phone was previously connected to) is detected, your S9/S9+ will propose to redistribute its Internet connection instead of wasting its cellular data. 

In such a way your Galaxy phone can connect to your home wireless network and connect up to ten devices via its own hotspot

Wi-Fi Sharing Explained in Detail

Thus, we can say that Wi-Fi sharing is a feature that allows wireless clients to connect to your home or office hotspot using an intermediate (so to say “proxy”) Galaxy device without sharing the Wireless password of your wireless router to the client devices of mobile hotspot.

The intermediate Android device works as a router between your home or office wireless network and the client devices of its mobile hotspot.

Here is an example.

We have Galaxy S9 connected to our office hotspot using its password which is known only to office workers.

Then, we set up a mobile hotspot on our Galaxy S9, so client devices can connect to our hotspot using another (its own) password. In such a way, we can connect client devices to the Internet via the cellular data.

But as soon as we activate Wi-Fi sharing toggle we can make the clients of S9’s network connect to the Wi-Fi hotspot of our office.

Wi-Fi sharing Galaxy S9

Not the Same as Wireless Repeater / Range Extender!

Wi-Fi Sharing is not the same as Wi-Fi repeater (Range Extender) mode on your wireless router or access point.

Wireless Repeater mode means extending the coverage of a particular wireless network with the same SSID, password and channel.

In the case with Wi-Fi sharing – you have two different networks.

How to Use Wi-Fi Sharing on Galaxy S10, S9, S8, Note, etc

Head to Settings → Connections → Mobile Hotspot and Tethering → Mobile Hotspot. Here you need to turn on both toggles:

Activate Wi-Fi Sharing on Galaxy S9 Android 8

As soon as your phone detects a known wireless network you will see the message: An available Wi-Fi network has been detected. Connect to use Wi-Fi sharing instead of mobile  data for your Mobile hotspot.

Wi-Fi sharing network detected

All you need to do to use Wi-Fi sharing is turn on Wi-Fi:

Turn on Wi-Fi Galaxy S9 Android 8

Be advised that once you’ve activated Wi-Fi sharing, your Galaxy phone will be able to switch between any known wireless networks that are currently in the range.

Consequently, the clients of your Galaxy’s hotspot will be able to use the Internet connection of your home router, your friend’s hotspot and even any public AP like Starbucks or McDonald’s which your Galaxy will get connected to.

If you want to prevent your Galaxy phone from connecting to certain wireless networks, you can go to Settings → Connection → Wi-Fi → tap the menu icon → select Advanced → Manage Networks and “Forget” all undesired hotspots among known ones:

manage networks galaxy s9 Android 8

How to Use Wi-Fi Sharing on Galaxy S20 (One UI 2.0,  Android 10)

In One UI 2.0 things have changed a bit. Follow the steps to activate it on your Galaxy S20, S10, etc:

  • Go to Mobile Hotspot settings (long tap on the corresponding quick toggle or navigate to Settings > Connections > Mobile Hotspot and Tethering and tap on the Mobile hotspot): Hotspot toggle One UI 2.0
  • Turn the hotspot on.
  • Tap the three dots in the upper right corner of the screen and select Wi-Fi sharing: Wi-Fi sharing settings One UI 2.0
  • Activate the feature:
    Turn on Wi-Fi Sharing Galaxy S20 One UI 2.0

Cannot Disable Wi-Fi Sharing on Galaxy S20

The question: Why can’t I disable Wi-Fi sharing? The toggle is grayed out.

The answer: Because of the Auto Hotspot feature enabled. Disable it first:

Disable Wi-Fi Sharing on Galaxy S20

That’s it. If you have any questions or anything to add on the topic, feel free to drop a comment below!

3 thoughts on “What is Wi-Fi Sharing on Galaxy S20, S10, S9, Note”

  1. Thanks for the great clarification of “Wi-Fi sharing” in my samsung phone. Would be nice if samsung offered that explanation as a footnote to the feature (thank goodness for the internet.)

    Question: is there essentially the opposite of this “Wi-Fi sharing” feature. From time to time there could be an internet outage at home or office, and it would be great to allow my home or office router connect to my mobile hotspot and share my cell phones internet as a substitute till the home or office outage is corrected?

    • Ya it would work that way just by turning on ur mobile hotspot and connecting ur devices via the wifi connection settings and it would also help some if u have a range extender to allow ur mobile data to travel farther and connect more devices with a strong connection because of the range extender idk if that’s helpful or not but its the best way I can think of that would work out for you if I’m understanding what ur asking correctly. I hope I answered ur question in a way that will work for u


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