Samsung Galaxy Wi-Fi keeps disconnecting? 6 things to check

By Saadat Rafiq · 2 min read · 7 steps · Updated 5 October 2026

Device

Android

Shown on

Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

App

Settings

Real screenshots

5 of 7 steps

Checked

October 2026

Sources

2 official, linked below

Step by step

1. 

   Open Connections

   Open Settings and tap Connections.

   Done

2. 

   Tap Wi-Fi

   Tap the word Wi-Fi, not the switch.

   Done

3. 

   Tap the three dots, then Intelligent Wi-Fi

   The three dots are at the top right of the Wi-Fi page.

   Done

4. 

   Check Switch to mobile data

   This moves the phone to mobile data when Wi-Fi is unstable and back when the signal is strong. It needs a SIM. Switch it off to test whether it causes the drops.

   Done

5. 

   Check Switch to better Wi-Fi networks

   This hops to a faster or more stable network you have saved. To prevent interruptions it only happens while the screen is off, but it can still move you off your main network.

   Done

6. Forget the network and join again

   On the Wi-Fi page, tap the gear next to your network, tap Forget, then tap the network and enter the password again.

   Done

7. Reset Wi-Fi and Bluetooth settings

   Settings, General management, Reset, Reset Wi-Fi and Bluetooth settings. Saved networks and paired devices are removed, nothing else. Steps: how to reset network settings on a Samsung Galaxy phone.

   Done

About this guide

When a Galaxy keeps leaving Wi-Fi, the phone is often doing it on purpose: Intelligent Wi-Fi moves to mobile data or to another network it thinks is better. Check those switches before blaming the router.

The screenshots are from a Samsung Galaxy A57 5G with One UI 8.5 and Android 16. Other Galaxy phones on One UI 8 use the same menus; on older One UI versions a few names and positions differ. Wi-Fi was switched off on our phone when we captured these screens. We only looked at these screens on our phone and changed nothing.

Good to know

If only one network drops, restart that router and check whether other devices drop too.

Detect suspicious networks, lower on the Intelligent Wi-Fi page, only sends a notification; it does not disconnect you.

In short: Wi-Fi, three dots, Intelligent Wi-Fi: test with Switch to mobile data and Switch to better Wi-Fi networks off. Then forget and rejoin, then reset Wi-Fi and Bluetooth settings.