Can I still make calls after my China Mobile SIM card is transferred to the United States?

To use your mobile phone abroad, you need to activate the international roaming function. If you are eligible to apply for international roaming, send SMS GMKTCQ to 10086 to apply for activation according to the SMS prompts. You can also click /MZJzQ3 to enter the activation of international roaming or follow the WeChat public account "China Mobile International Roaming" to activate international roaming. The details are as follows: 1. Star numbers (one star and above) can be activated through SMS without pre-registration. 2. If the general account balance of non-star numbers (i.e., front sight, unrated) is not less than 200 yuan, you can send a text message or click the above link to apply for activation. Special note: If the number is paid by others in the customized billing relationship and the number is a non-star number (i.e., front-star or unrated), you need to go to the business hall to pay a business deposit of 1,000 yuan to apply for activation. The processing procedures are different in different provinces, cities and regions. Please refer to 10086 real-time consultation for details.