1. Make sure Bluetooth is on
Pairing can’t start without Bluetooth, so double-check that it’s enabled on your iPhone:
Settings → Bluetooth → On
2. Re-enter the serial number
The serial number needs to match exactly what’s printed on the sensor packaging.
A single mistyped digit can stop the pairing process, so it’s worth taking a second look.
3. Keep your phone close
Make sure your phone is within 3–10 feet (1–3 meters) of the sensor. Being too far away, or having walls in between, can interrupt the signal.
4. Restart the app
Sometimes the simplest fix works best. Close the Nico app completely, reopen it, and try pairing again.
5. Check that your sensor is properly applied
Make sure the sensor is firmly attached to your skin and hasn’t lifted at the edges. If the sensor isn’t making good contact, the device may struggle to connect.
6. Check device compatibility
Make sure your sensor is on our approved compatibility list. If it’s not listed, pairing may not work reliably.
💡 Tip:
In case you're still unable to pair your sensor, please reach out to us at [email protected] and we'll be able to troubleshoot this for you.