Once we have chosen 1 model for example chat gpt or gemini in settings it should remain selected and so whenever we open this app so we don't need to tap on"new chat" button and select model every time
and if we have chosen chat 3.5 there should be 1 option in chat to change from 3.5 to 4.o(chat gpt's official app) so we don't have to go in setting to change.