A: SIM card is easily got. You can purchase it at any cell phone shop through handing in a copy of your ID card and depositing certain money in the SIM card. In China, there are three kinds of SIM cards, China Telecom, China Mobile and China Unicom SIM cards. You can choose any kind according to your needs. No matter what SIM card you buy, the phone number representing the card will be fixed and consist of 11 Arabic numerals.