A:AnswerPossible cause: You move or talk during a measurement. Vibrations disrupt a measurement.
Solution: Remain still and do not talk during a measurement.
A:AnswerSync it with your phone and it should pick up everything else there is a way given in the manual that personally, even I found a tad bit boring to work with.
A:AnswerError Code/Symbol - Not going to the hospital. Clothing disrupting the measurement or something in the way to get a reading. The monitor cuff has to be on your skin when taking a reading. Take your reading again.
A:AnswerYou can request that the smartphone app send you a file with the readings and you can then send the file to your doctor. Maybe if you pay for the subscription it might send to your doctor for you, I would rather control that myself and not pay for a subscription.