China Mobile Communications Corp, the country's largest telecom operator, said it will scrap domestic roaming charges by the end of this year, a fee that is considered as a key source of revenue for telecom carriers, as the company focuses on more lucrative 4G services.

"Since July, China Mobile has stopped selling new service packages that include domestic roaming charges on cross-province phone calls," said Li Yue, president of China Mobile.

He predicted that the company will cancel all roaming long-distance packages by the end of the year, and boost integrated service packages in the future.