A new Internet security report is suggesting Chinese mobile Internet users are becoming inundated with massive data flows without knowing it.
One main problem is pop-up ads.
"Some app developers force you to update or you can no longer use the app. They have also been able to design some tricks for you to update the app updates without knowing what happened. This chews up a lot of data."
An extra megabyte of data used outside your monthly plan runs around 10 yuan.
Qiu Baochang with the China Consumers' Association says there are legal options available to fight pop-up ads.
"If an app developer fails to notify you about their product or mislead you, they are then in violation of the consumers' rights laws. Consumers can sue the app developers if they want restitution."
Internet regulators in China brought in new rules in September to monitor the use of pop-ups on mobile devices.
Mobile internet users hit 500 million this past year.
