If u have an extension, u can change your extension to a non - o retirement visa. Your last entry must have been on a tourist visa. U do it before the last day of your current extension. I did mine 15 days before while I was taking vacation from my job. Sorry, I do not have time to give u the full details.
U will have to install the app on the new phone right. When u first install the app you need a special code. I know as I went through this. U cannot have the app on two phones. I am only saying what I went through.