not to take this slightly off topic, but i have never had any good luck with dlink routers and wireless devices in general. i thought comcast was to blame for all of my internet issues, but they were all solved when i switched router brands.
not saying the phone and router shouldn't play nice, i just think the dlink brand of routers in general has these issues. cisco/linksys and even asus have worked a lot better for me. i own the dir-655 and that thing has never been able to handle wireless traffic without dropping connections constantly (to laptops, apple and lenovo, to tablets, nexus and ipad, to phones, iphones and a variety of android devices)