If Smartbuds won't connect during onboarding...
1. First, check your setup
Make sure your phone’s Bluetooth is on and that you’re using the latest version of the NextSense app.
Confirm that the case LEDs light up when each bud is inserted in the charging case.
When a Smartbud is seated properly, the corresponding case LED should light up. If it does, try re-seating the bud. If Smartbuds are not making contact with the case, they will not charge effectively and cannot establish Bluetooth connection with phone.
Keep the case very close to your phone when attempting to pair (within 10 cm).
2. Enter pairing mode
With the lid open, press and hold the case's back button for 3–5 seconds until the middle LED blinks.This puts your Smartbuds into pairing mode.
Reopen the NextSense app and follow the on-screen instructions to pair.
3. If pairing still doesn’t start, perform a factory reset:
Force close the app
Place both buds in the case and close the lid.
Press and hold the case button for 12 seconds until all 3 LEDs blink, then release.
Wait until the lights turn off, keep the lid closed for 10 seconds, then open it again.
Return to the app and retry pairing.
Still not working? Contact us at support@nextsense.io.
If Smartbuds won’t reconnect after connecting successfully in the past...
1. Check your setup
Make sure your phone’s Bluetooth is on and that you’re using the latest version of the NextSense app.
Confirm that the LEDs light up when each bud is inserted in the charging case (ensures proper contact and effective charging).
Keep the case very close to your phone (within 10 cm) when attempting to pair.
2. Forget Smartbuds and re-pair
On your iPhone, go to Settings › Bluetooth.
Tap ⓘ › Forget This Device for all Smartbuds entries (you may see two labeled “EEG” and one labeled “Smartbuds”).
Go to Settings › Smartbuds › Set up new Smartbuds, and follow the prompts.
3. Still not connecting? Perform a factory reset
Place both buds in the case and close the lid.
Press and hold the case button for 12 seconds until all 3 LEDs blink, then release.
Wait until the lights turn off, keep the lid closed 10 seconds, then reopen.
Open the NextSense app.
Go to Settings › Smartbuds › Set up new Smartbuds, and follow the prompts.
Still not working? Contact us at support@nextsense.io.
If Smartbuds appear connected but there's no sound from one or both buds
1. Make sure both buds are charged
Place both buds in the charging case and check that each LED lights up when inserted.
If one doesn’t light up, re-seat it until you see the light — this ensures proper contact and charging.
Wait a few minutes to let both buds charge before trying again.
2. Forget Smartbuds and re-pair
On your iPhone, go to Settings › Bluetooth.
Tap ⓘ › Forget This Device for all Smartbuds entries (you may see two labeled “EEG” and one labeled “Smartbuds”).
Go to Settings › Smartbuds › Set up new Smartbuds, and follow the prompts.
3. Still having issues? Perform a factory reset
Place both buds in the case and close the lid.
Press and hold the case button for 12 seconds until all 3 LEDs blink, then release.
Wait until the lights turn off, keep the lid closed 10 seconds, then reopen.
Open the NextSense app.
Go to Settings › Smartbuds › Set up new Smartbuds, and follow the prompts.
If you’ve tried these steps are still having issues...
Toggle Bluetooth off and back on, then try again.
Try pairing on another phone to ensure it's not an issue with phone Bluetooth.
Contact us at support@nextsense.io.