Just ran into an issue this morning (no changes since I went to bed) where my phone won't detect and use the wifi signal unless it's about 2 feet away from the router. I have good signals coming from my various neighbors wifis so I know it's not my phone antenna. I used to have full signal with my wifi. I've also tried rebooting it a few times (whether through the 192.168.1.1 interface or just unplugging it for a minute. My PC's wired directly to the router and that works fine since speed tests, etc all look good. I've also tried switching the broadcast channel on it but it hasn't helped at all.
Anyone have any ideas? It's a new router that has been in use for under a week.