My mistake and apologies as I responded incorrectly. I do not know for sure if Textra will allow the use of two SIMs and let you select between them. I installed Textra on my wife’s Note for two reasons. 1) Messenger, our preferred text app would not identify SIM 2 as the primary messaging SIM. I have an SD card in SIM 1 and I screwed with that for hours and gave up. 2) The default messaging app would not easily save photos received in MMS messages. It sent me to the file manager to select the drive and folder- too much work. Textra solved that by automatically storing the pictures in the correct file where my gallery app, QuickPic can find them right away. Quick Pic and Textra work incredibley well together.