@Solla-topee 

Thanks for the reply, below is the test results 

Step 1

Ensure Tapo Cam is powered on with the rated voltage. - able to start up

Step 2

Power off the device for few minutes, then power cycle and reset the Tapo Cam, ensure its LED blinking red and green. Otherwise, reset it by pressing and holding the RESET button for over 5s until the LED blinks red. - reset the device but no device WiFi detected on phone 

Step 3

Android: Go to the Settings page to connect to the Tapo Cam’s Wi-Fi network. Once it’s connected, the phone will search the camera automatically. - device WiFi not detected 

Step 4

Choose the right wireless network to connect, which SSID should be ‘Tapo_Cam_XXXX’. (XXXX is usually the last 4 bits of the device's MAC Address). - not detected 

Step 5

Change the location for setting up the smart device to reduce the possible interference in the same frequency band at the original location (to avoid interference from devices such as Bluetooth, USB 3.0, microwave ovens, ZigBee devices, etc).- location changed but no device WiFi detected 

Step 6

Reboot the phone to have a try, or try a different phone - the phone and tried using 2 different phones

same issue 

If the problem remains, please help confirm:

1. The LED status on the camera - blinking red and green

.