For some reason, the WiFi on my iPhone 5 on iOS 6 gets only 20-25% the bandwidth that my notebook computer gets when connected to my home network. I ran multiple speed tests and the result is always the same. I reset network settings on my iPhone, but that didn't help at all. Running off HSPA+ or LTE I can load stuff very quickly, but WiFi is just unacceptably slow for anything that is a video stream or App Store purchase. Any idea what could be wrong?