Hi there! I understand you're experiencing recording interference issues with your Kardia app. To better assist you, could you tell me when the interference occurs? For example, is it right when you start a recording, or does it show up during or after? Also, are there any error messages displayed on the app?

In the meantime, let me guide you through some common steps to reduce or eliminate interference:

1. Change location: Move away from possible sources of electrical noise like Wi-Fi routers, smartphones, computers, or other electronics. Sometimes nearby devices cause electrical interference affecting the signal.

2. Check your device contacts: Make sure the electrodes on your Kardia device are clean and dry. Moisture or dirt on the sensors can lead to noisy or unreadable recordings.

3. Avoid plugging in accessories during recording: Remove headphones or unplug your charger from the phone while recording, as these can introduce noise.

4. Position device properly: Ensure the Kardia device is held gently but firmly against your fingertips, and hold still during the measurement. Light, steady contact helps get a clearer signal.

5. Restart app and phone: Close and reopen the Kardia app. If needed, restart your phone to clear any temporary glitches.

6. Check battery: If your Kardia device uses a replaceable battery, ensure it has sufficient charge. A low battery can create interference.

Try these steps and let me know if the problem persists or if you get any specific error messages. We can explore further solutions based on what you observe.

Are you satisfied with this initial guidance?