Iphone is aleays home

I have set up device tracker over linksys_smart router. I have set up tracking for two device ( iphone 8 and huawei p10) when huawei is disconnected from wifi i can see that is not_home. But iphone is show that is always home. Even if directly on linksys is show as offline.

What can be problem?

I have got also if I am home and turn OFF Wifi on iphone then i can see on home assitant that iphone is not_home. But if i go away from home and turn off Wifi or even mobile data i still can see that iphone is home.