How to save SMS to sim card?

Mobile phone SIM card and mobile phone memory can store short messages (referring to smart phones and later non-smart phones). The capacity of SIM card of mobile phone is relatively small, and the average capacity card can store about 40 short messages, while the storage space left for short messages in the memory of mobile phone is about 500. When the mobile phone is turned on after installing SIM, the default storage address for receiving SMS is the memory of the mobile phone, but the storage location can also be changed to SIM card by simple setting (mainly for SMS that needs to be stored for a long time, and SMS will not be lost because of changing the mobile phone or swiping the phone). If you want to copy or transmit the short message in the phone memory to the sim card, you can do this: open the short message to be copied, hold it down, and a "Save information to SIM card" will be selected in the pop-up dialog window, and vice versa.