Not support.
The Redmi Note 13 5G supports dual-SIM function, which allows you to insert two SIM cards at the same time, making it convenient to use two different mobile phone numbers on one device. This is very useful for managing work and personal numbers at the same time, or using a local SIM card when traveling. However, the Redmi Note 13 5G does not support Dual-SIM Standby, that is, when one card is used for a call, the other card will not be able to answer calls or perform data transmission. Therefore, the second SIM card cannot receive SMS messages when having a phone call with the first SIM card on the Redmi Note 13 5G. However, after the call ends, you can still receive SMS messages, so you won’t miss important information.