Phi III, Greater Noida
Phi III or Phi 3 is a residential locality in south-western Greater Noida, Uttar Pradesh, India. Bordered by Phi I and Phi II to the north and Chi III and Chi IV to the west, it is known to be one of the real estate hotspots of Greater Noida, alongside Omega II, Omega I, Phi I, Phi II, Phi IV, Chi I, Chi II, Chi III, Chi IV and Chi V. It is named after the Greek letter Phi. References 

Geography of Uttar Pradesh