Answered by George from USA | Oct. 26, 2015 21:00
The best wholesale market for mobile phones in Guangzhou is the Tianhe Computer City at no. 502 on Tianhe Road, Tianhe District. You may take subway line 1, get off at Tianhe Sports Center, and leave from Exit A. Or, you may take subway line 3, get off at Shipaiqiao Station, and leave from Exit D.
The best wholesale market of cell phones in Shenzhen is Huaqiang North Commercial Zone. You may take subway Luobao Line, get off at Huaqiang Road Station, and leave from Exit A. Or, you may take subway Shekou Line, get off at Huaqiang North Station, and leave from Exit A. :)