Unable to use WiFi

Over the last two days I have been unable to use my iPhone with my home Wifi.

In settings>wifi>choose a network, it is there and ticked with a full 3 bar blue signal. Yet when I try to use any apps or safari etc it goes back to 3G at best.

My home Mac and PC are working perfectly with the the home wifi and are running at over 6.0mbs.

I have tried on/off, on/off wifi, disable 3G etc. Still keep getting the same result no wifi.

Its a 16GB 3gs using iOS4 and has been perfectly fine even after I upgraded to the 4th operating system on day of release.

As always thanks in advance.

Ps. The wifi connection with my iPod Touch is spot on.

Do you get connected and it's just slow, or can you not connect to the wifi at all?

scathe said:

Do you get connected and it's just slow, or can you not connect to the wifi at all?

Click to expand...

In the settings it says I'm connected to my home wifi network. When I come out of settings and back to the home screen I have no wifi signal indicator and it resort to 3G if I'm lucky but usually just plain edge in my area.

In the settings it shows i'm connected with a good strong signal (Tignes);



Yet when I open an app that requires internat connection it's gone, as in this eBay app for instance;