Ive recently had a problem with getting a signal. The signal will be "bad" or "no signal". When I take a reading holding iPhone horizontal and look at screen the strip reading with not reorient. May have something to do with IOS 10 from Apple. Otherwise I rely heavily on the device to take EKG to monitor heart and afib or flutter during the day. Use sure resolves a lot of anxiety. Reassuring to know I am in NSR. Would not be without the device.
BlueScarf6 about Kardia, v4.4.0