How to fix unstable networks connection on Galaxy Z Flip?

Unlike ordinary smartphones, your Galaxy Z Flip is specially designed to fold downward. Based on this new feature of the Samsung foldable device, you can hold the entire folded device which can affect radio waves such as Bluetooth, Wi-Fi, and other networks. 

Do not attach metallic stickers on the antenna area (side with cover screen) of the device.

Do not attach a device cover made with metallic material to the device.
It is recommended that the user uses the device with the product cover supplied to avoid direct hand contact with the antenna. 

Step 1. Launch the Settings app.

Step 2. Tap Connections. 

Step 3. Turn on the Bluetooth switch to re-activate.

Should you still have connectivity problems, please try the following to reset the network settings on your device. 

Step 1. Launch the Settings app.

Step 2. Tap General management menu.

Step 3. Tap Reset menu.

Step 4. Tap Reset network settings menu.

Step 5. Tap Reset settings button.