The SIM card is removed from another mobile phone and put on another mobile phone, and the message is gone.

Short message storage is divided into SIM card storage and mobile phone memory storage. According to your description, it should be that all the short messages of the original mobile phone are stored in the memory of the mobile phone and will not be transferred to the new mobile phone with the transfer of SIM.

It may be different for different brands of mobile phones to transfer short messages. The easiest way is to go to the local mobile business hall and ask them to use special software to help you transfer.

I hope I can help you and adopt it ~