STATIC IP NOT WORKING

[RockSmoke]

hello everyone. I made a static ip application in esp32-idf. When I connect to my home modem, static ip works, but when connecting to my phone as a modem, static ip does not work. Has anyone tried or have any ideas?

[ESP_YJM]

Could you please offer more details information? Such as IDF version, example you used, console log?
Besides, could you please try to use DHCP to get IP from your phone? And show the IP you got from phone.