Is there any mainstream mobile phone that can store SMS indefinitely?

As long as you look at the system, it is recommended to choose a system above wm5.0 or a new version of Saipan, such as the mainstream s60. As long as the machines of these two systems can store the short messages on the memory card without restriction through software (as long as your card is large enough), the capacity of the external memory card supported now is also limited. At present, mainstream machines support 8G card 2~4G expansion cards, but not all machines support them.

It is recommended to install a machine with one of the above two systems, which can store short messages and other materials to the computer hard disk through software, without capacity limit ~ Smartphone Studio ~.