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Start here: make sure the SugarPixel app is up to date in the App Store or Play Store, and that your SugarPixel Mini/Classic has the latest firmware installed. See Firmware Update.
Try these in order.

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1. Restart both devices

  1. Reboot your phone
  2. Unplug SugarPixel Mini/Classic and plug it back in
  3. Try connecting again in the app
If you previously forgot to tap Disconnect in the app, this often resolves the issue.

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2. Check app permissions

Open your phone’s Settings → Apps → SugarPixel and confirm all permissions are allowed. Then reopen the app and try connecting again. If the app shows “Stopped”, also make sure Bluetooth is enabled on your phone.

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3. Remove and re-pair Bluetooth

An incorrect pairing code is the most common cause of connection failure. If the wrong code was entered, your phone may show “connected,” but SugarPixel Mini/Classic will not send data.
  1. Open your phone’s Bluetooth settings
  2. Find the saved SugarPixel Mini/Classic device
  3. Select Unpair / Forget / Delete
  4. Restart your phone
  5. Unplug and replug SugarPixel Mini/Classic
  6. Open the SugarPixel app and reconnect
  7. When prompted, enter the 6-digit code shown on the SugarPixel Mini/Classic display

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4. Manual pairing (if needed)

  1. Remove any saved SugarPixel Mini/Classic in Bluetooth settings
  2. Restart phone and SugarPixel Mini/Classic
  3. In phone Bluetooth settings, tap SugarPixel Mini/Classic when it appears
  4. Enter the 6-digit pairing code
  5. If it shows “Connected,” tap to Disconnect (do not forget)
  6. Reboot SugarPixel Mini/Classic
  7. Open the SugarPixel app and connect