I still have an iphone 3G because it has and currently still is running strong, but for over a year now I have not been able to connect to the wifi in my home or anywhere else. My phone used to be jailbroken, but i eventually restored it back to normal and about 2 months after restoration my phone quit connecting to wifi. Everyone in my household has an iphone and they all connect to wifi no problem, so it can't be the router. I  can't even manually search for our network my phone just doesn't find a signal. today it randomly connected and stayed connected and I was stoked, but i left for work, came back..and again it isn't connecting.

any tips or suggestions?