my application get device id run time error!
mdzakirhossain Share your block image from this this screen
mdzakirhossain brother go to your device settings search there app information and there go for apps property then permission then allow all then check again
mdzakirhossain This is permission problem so you allow it
As the error says, when app opens you must call permission to read phones state. There is a block for that.
Allow the permission it will be alright.