The positioning function on a mobile phone led a husband to suspect his wife was cheating on him with his best friend.

The 28-year-old husband from Chongqing, surnamed Yu, 28, married his wife, surnamed Luo, in 2014.

He allegedly found out that Luo had a close relationship with his best friend.

Yu said that his wife told him last month that she was going to dinner with some of her classmates from a degree course she was taking. But he claims that her mobile phone positioning function revealed that she was actually in his best friend's home.