Everytime I leave the house and re- enter I have to restart my router to connect to my home Wi-Fi again. I have tried forgetting the network and restarting my phone... that doesn't seem to help.
It only happens with my home Wi-Fi not anywhere else... my cousin has a q10 too but the same thing doesn't happen with him.... so I'm guessing the issue is with my phone..
Doesn't appear to be hardware/software if it's only your home network. More likely to be router or phone settings, although if your cousin's Q10 connects to your network without issue it's more likely your phone settings.
Delete your home network from phone and reset your router. If you're able to go online to your router settings reset from there.
Reboot phone and connect it with WPS rather than password.
Prioritize your home network as first choice and disable prompt for saved networks if it is enabled.
If this doesn't help (sounds like you may have done most of this already) connect your cousin's Q10 at same time and open Advanced wifi settings on both devices to see if settings are different. If any differences are present troubleshoot by trying one setting at a time on your phone.
Good luck!