It should be a stable connection. You may need to upgrade your THETA V firmware, Android camera OS, or other component.
To test the basic camera stability, connect your camera to a laptop or desktop computer with Wi-Fi.
Then, run some tests from this guide:
If you’re using the Wi-Fi API, you cannot have the THETA V plugged into your computer with a USB cable. You need to plug it into a wall socket USB charger. Unit from your Android phone will work.
Please confirm that you can run the API commands from a laptop or other device first. The connection between the device and the camera should be stable and not time out.
You can test the commands with curl, Postman, or other HTTP testing tool.
You can also use a browser:
http://192.168.1.1/osc/info
If it works on the laptop, but not on your Android device, please post the OS version, such as Android 7.1.
This article may be helpful.
Please provide the version number of the SDK you are using.