That's great. I appreciate you sharing everything you've tried so far. 👍 I recommend testing the speed and function of your phone's Wi-Fi connection by performing a hardware test. To do this, please head to the Support section of the Members app > Select 'View tests' underneath the Phone diagnostics heading > Wi-Fi.
If this does not help you get to the root of the problem, there are other steps you can follow.
For example, have you also tried Wiping the cache partition to see if this helps?:
This is how you can Wipe the cache partition:
1. With your phone turned off, plug in a USB-C data cable connected to your PC. If you do not have access to a PC, you can plug in a USB-C to USB-C cable from your phone and connect the other side to another phone.
2. Press and hold the volume up and Side keys simultaneously until the recovery mode menu appears.
3. Use the volume down button to highlight Wipe cache partition, then press the Side key.
4. Use the volume down button to highlight Yes, then press the Side key.
5. Use the volume up button to highlight Reboot system, then press the Side key.
If you go through this step and still find that your phone is disconnecting from your Wi-Fi, then we recommend submitting an Error report, as this will allow our developers to take a closer look at this for you.
To submit an Error report, please launch the Samsung Members app > Tap Support > Scroll down and tap Error reports > Choose a category of Error report to submit > Complete the required details and then send the report by tapping the send icon.
Please let us know whether this helps.
