HI! Im making simple app to send text thru bluetooth serial. Works great but on newer smartphone. When i open this app on older phone with 4.1 android its just doesnt connceting to esp32. I was thinking that this is phone fault but on the same phone i can send text but with bt terminal app. What can it be. Thanks.
Try not using a listpicker. Use a listview instead...
https://groups.google.com/g/mitappinventortest/c/TsYNtMp8jZk/m/5QT67nZuOq8J