My Iphone 4 won't find my home wifi

I recently tried to change the wifi channel of my router (Belkin n+ F5D8633-4) after this it decided not to work at all, so i did a factory reset on it and got it up and running again. But now my Iphone 4 can't seem to find the network, it finds others and my 2 laptops can find my network and connect okay. Ive tried changing the security from wpa2 to wpa and then to wep but it still cant find it. Anyone have any ideas? i think about about to tear my router out of the wall and go back to the dark ages......Oh and my iphone is running IOS 4.3.5 (8L1)