How to access my house's Wi-fi?

So i had an Samsung GalaxyS2 but i lost it so i got an iPhone 5S, when i had the android, i could easily access our WI-fi without a password, but now that i have an iPhone, it keeps asking for a password which i don't know and also my parents, but on the android there was this place where you touched and you didn't need a password, sorry if i hadn't explain greatly.

Well open cmd and type ipconfig and copy the ip address and paste it on the address bar of internet explorer
then the routher setting page will open and you will have the password if you want any help mail me at kathayat.deepaksingh@gmail.com with your contact number and name i will call you and will fix your issue

If your Wi-Fi is protected by a password you should enter that password to gain access
Commonly, you can type 192.168.1.1 in internet explorer and enter your router config page by entering user and password that can be admin and admin
There, you can go to the wireless section and set or change your pass.
But, in iPhone, it may ask about the security code or serial number of your router that is written on the back side of your router.

Hope it helps

You have to connect your Wi-Fi with password for one time only. From second time your iPhone will automatically connect to Wi-Fi without any password.