According to UBS' Prices and Earnings 2015 report, which compares the purchasing power in 71 cities across the globe, people in Delhi need to work for 360.3 hours to afford an iPhone 6 - the third highest in the world. Another Indian city Mumbai comes fifth with 349.4 hours.

Globally, the working time required to buy an iPhone 6 of 16 GB is the most in Keiv with 627.2 hours, followed by Jakarta/Nairobi, sharing the second place with 468 hours. Cairo is fourth at 353.4 hours. In contrast, workers in cities such as Zurich and New York City require on average less than three days on the job to be able to afford one.

Similarly, to be able to buy a Big Mac, workers in Hong Kong only have to work on average nine minutes, while in Mumbai one has to work for 40 minutes and in case of Delhi it is 50 minutes. In sharp contrast, workers in Nairobi have to work almost three hours to buy a Big Mac.

The report considered staple consumer goods like McDonald's Big Mac and Apple iPhone, as these products are of the same quality and nature worldwide, making their prices and affordability comparable, UBS said.