Weird Wi-Fi problem, can't figure this out.

[Murgyyy]

G'Day everyone, so lastnight I tried using my iPhone and iPod to surf the web, use facebook etc. The wifi would not work for me, but it was connected with full signal. My sisters iPad and my mums iPhone doesn't work either, but they are both connected. I tried my playstation with wifi connection and that connected and signed in.

I don't know, I had some mates over yesterday and they all used it fine and I did. But when I came home it kicked up. I've tried every button on the modem, turning it off and on. Reconnecting wifi on my phone and other devices. Nothing!

I would appreciate all help!
Thankyou I usually can figure most of my problems out myself, but when I can't I come to you guys haha

 

[initiald64]

I just assume its your router and not your iphone you're trying to connect, was there any additional setting on your phone that you might included? do you have a computer to hook it through LAN and see the setting inside to see if you can connect to the internet? usually default setting like 192.168.0.1 to check your router configuration