Why is the text message still in the original phone after changing the phone?

Because the mobile phone is stored in the default memory, that is, the memory of the mobile phone itself, there are generally two ways to transmit short messages: 1, enter the short message settings and choose to store them in the SIM card (generally there is a memory limit, about 200 is the limit, of course, some cards are different) 2, synchronize short messages or contacts with Bluetooth.