In order to take a test, “Ready,” “Blow,” or “Test Required” must be displayed on your device. Make sure that your mouthpiece is aligned correctly and inserted all the way into the device. If the device is uploading data to a cellular network or conducting internal tests, it may not be ready for you to take a test yet.
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Frequently Asked Questions
Q:
Why won’t the device allow a test when I blow?
A: