My phone can connect to the wifi in my house perfectly, but not at my parents house even tho its the same phone, same make of router and both where setup by me.

My phone can connect to the wifi in my house perfectly, but not at my parents house even tho its the same phone, same make of router and both where setup by me. Wifi depends more on location than the hardware or how you are using it. The anecdote that it works for you is fair enough but pretty useless in this situation as its just a coincidence.