... 2012 LCD digital display alcohol tester for iphone/ipad/ipod 1.LCD digital display 2.small,exquisite,delicate design 2012 LCD digital display alcohol tester for iphone/ ... iPhone, then unlock Iphone, then press switch of tester for a long time till Tester alert short buzzing, at the same time LCD screen ... blow 3 to 5 seconds, after finishing countdown, display screen will show the test result.4. If test ...