Wisp mode with smartphone

Hi, I am a new user. I have a problem when i join my router to my hotspot wifi (smartphone) : client device doesn’t surf on internet. But if I connect the router to my home wifi network everything works. How can I fix it?
Thanks a lot.

Is the Openwrt router's LAN subnet perhaps same as the subnet on the phone ?

Router’s lan is 192.168.5.1
Hotspots wifi 172…..

ok,

did you then put the wifi connection to your phone in the wan firewall zone ?

Ho i do this?
Thank you

https://openwrt.org/docs/guide-user/network/wifi/connect_client_wifi

This may not function as expected if your phone sets up a TTL=1 for the packets. In that case, you need to get into more advanced changes using mangle.