Out of nowhere, my iPhone 4s all of a sudden quit connecting to my Time Capsule's wifi. Have never had any problems until yesterday. Have read multiple forums that say reset your iphone, turn wifi off and then on, forget and then resgn into network, change the channels on wifi from automatic to different channels. Changing the channels worked for about an hour and then I was back to square one. Everything else failed. iMac and MacBook connect without any problems or delays at all. PLEASE HELP?!?!