Why can't I connect my Iphone 4 to our home Wifi? Umm, I need help about my Iphone 4... I recently bought it and was able to connect to our home wifi perfectly.. But one day, we don't know why, but me and my brother's iphone 4 was unable to connect to the home wifi. Although, we could connect to our school and other places's wifi network except our home wifi!!! :( Help please??? Thank you!
A few years back I had a particular wireless access point that would often exhibit this behaviour. One or two devices wouldn't connect after some time (a few days, maybe a week). Rebooting it let everyone back on.


Try rebooting the access point.
Check for driver/firmware updates (access point and devices).
If you can, borrow or swap access points temporarily to see if its any better.


It seemed, in our case, to be a bug in the router, but never really figured out if it was randomly 'breaking' for certain clients/chipsets/etc or if it was something more consistent like a bug in the 802.11n compliance... in the end we replaced it and all was fine.