My laptop connects to my Wifi but my iPhone does not. I connect my macbook air from the basement to the wifi and i get all 3 bars, but then i connect my iPhone from same place in the basement, the iPhone keeps losing the wifi.i had an iphone 4 before so I thought it was just the Antennas of the iPhone 4 that was weak. Now I have the iPhone 6 plus and its the same issue. what do you think is the problem? is it my router? i have a netgear WNR1000v2 and it is upstairs, about 50-60 ft away from my room in the basement.
Download a wifi analyser onto your phone (plenty of good free ones) and check the signal strength your getting on it when scanning for WAP's.
This should help you rule out if its the signal strength, leaving either your netgear or iPhone as the culprit.
See this article as well