HTC One User Manual page 65

If you're asked to confirm, say "Yes" or "No".
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To cancel the call, say "Cancel".
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Bypassing the screen lock for Quick call
If you've set a screen lock with credentials, you can set HTC One to skip
the security screen so you can immediately place calls with Quick call.
1. Go to Settings, and then tap Display & gestures.
2. Tap Motion Launch gestures.
3. Select the Bypass Security screen option.
Turning Motion Launch on or off
Motion Launch is on by default. You can turn it off in Settings.
1. Go to Settings, and then tap Display & gestures.
2. Tap Motion Launch gestures.
3. Clear the Motion Launch gestures option to turn it off, or select it to
turn it back on.
Your first week with your new phone 65