it have 2 ways :
after that pls install the camhi app , and then ,open your phone's wifi setting and connect the cameras 's wifi ssid named IPCam-xxxxx . password of hotspot is :01234567
for more details ,pls check link in youtube
link:https://youtu.be/9h6rfjjkR44
(how to use phone set up wifi ip camera (camhi))
(enter ip address in explorer )
after you set the camera 's wifi configure connect with your router ,you can unplug the lan cable !
link:https://youtu.be/Apr0CKVXiiY