No mobile data on the Xiaomi 11T

If there is no mobile data on the Xiaomi 11T, you can try the following troubleshooting steps:
1. Ensure that you have sufficient credit for the mobile data. You can contact your carrier customer support and see if your SIM card is out of credit;
2. Ensure that your phone's operating system is up-to-date. Software updates often include bug fixes, security patches, and improvements that can address software-level issues;
3. Make sure that mobile data is enabled in your phone's settings by going to [Settings] >> [SIM cards & mobile networks] >> [Mobile data];
4. Select 4G or LTE as the preferred mobile network by going to [Settings] >> [SIM cards & mobile networks] >> [Preferred network type] >> [Prefer LTE]; 
5. If possible, please insert your SIM card into another phone and see if the mobile data is available. If there is no internet, it indicates that your original SIM card may be faulty. In this case, please contact your mobile carrier's customer support; 
6. Restart your Xiaomi smartphone to refresh the operating system;
7. Reset network settings by going to [Settings] >> [Connection & sharing] >> [Reset Wi-Fi, mobile networks, and Bluetooth]. Please note that resetting network settings will clear all network-related configurations, including Wi-Fi, mobile data, and Bluetooth settings so remember to back up important information before proceeding;
8. If the problem persists, you can perform a factory reset by navigating to [Settings] >> [About phone] >> [Factory reset]. Please note that this will erase all data on your phone so remember to back up important information before proceeding.
If there is a hardware issue, please contact our local official service center or your seller for further assistance. They will help you in this regard.