If you want to get a new cell phone number, don't forget to bring your ID  with you . As of September 1, people have to register  with their ID to buy a new cell phone number. You can show your ID card orhukou, but student ID's won't work. If you already have a cell phone number, it is better to register it before 2013. The new rules are meant to prevent junk messages and fraud  through cell phones. A cell phone user in China on average received 43.3 messages a week in the first half of this year. According to reports, about 12 of those were junk messages. In a survey, about 74.5 percent of users said they have received fraudulent  messages. If all people register their cell phone number with ID information, it will be easier for police to find the people behind those messages. Situations in other countries Because cell phone are getting more and more popular, many countries have made stricter cell phone rules. Countries like India, Japan, Australia, and Singapore all ask users to register their ID information. Ulrich Mller is a German living in Beijing. "In Germany, you have to show your ID when you buy a cell phone card," he said. "The rules have been there for a long time. Most people know about it." Linda van der Horst is a student at Peking University. She said that in the Netherlands ,people have to show ID information and bank account  information to buy a cell phone card. What is the passage mainly about?
How to use a cell phone. How to choose a cell phone. New cell phone services. New cell phone rules in China.