When I leave an area where I was connected to Wifi, my signal bars only come back as grey instead of blue. I have full strength and 3G, but it won't let me use any data on the phone. I can only receive text messages or calls while this is happening. The only way for it to fix itself is by restarting the phone or toggling airplane mode a few times. This started happening randomly within the last few weeks. No new apps that have anything to do with Wifi or signal to my knowledge.
Any ideas? :-(