Guangzhou is likely to become the first city nationwide to experience the 4G network through mobile devices.

The 4G commercial trial will be extended to Guangzhou and Shenzhen this week, offering users tailor-made Samsung Galaxy S3 phones that support the indigenous TD-LTE technology, according to a post on the China Mobile Group Guangdong Co Ltd's micro blog. Customers will have to sign a 388 yuan ($62) monthly contract for the service.

Withan investment of 20 billion yuan, Guangzhou will build an extensive TD-LTE network to cover the city by 2015, marking the biggest such infrastructure development nationwide, according to an agreement between the Guangzhou municipal government and the carrier's Guangdong company.