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Pair with Your Device

Connect cardoO Buds

iPhone / iPad

  • Open the case and bring it close to your device.
  • Go to Settings › Bluetooth and turn Bluetooth On.
  • Select cardoO Buds and tap Connect.

After pairing: install the cardoO app for firmware updates, touch and EQ controls, and managing multiple connections.

Android

  • Open the case and press the Pair button (if available) until the LED blinks.
  • Open Settings › Bluetooth and enable Bluetooth.
  • Under Available devices, select cardoO Buds and tap Pair / Connect.

For full functionality (EQ, gestures, updates, multipoint management), use the cardoO app.

Multi-connection (Manual Switching)

Your buds can be paired with multiple devices (like a phone and a laptop), but only one active connection at a time.

When you connect to a new device, the previous one disconnects automatically. This is manual fast switching, not simultaneous multipoint.

Typical flow (Phone → Laptop → Phone)

  • Buds are connected to the phone.
  • On the laptop: open Bluetooth, select cardoO Buds → Connect — the phone disconnects automatically.
  • To return to the phone: in Bluetooth settings, select cardoO Buds → Connect — the laptop disconnects automatically.

iPhone / iPad (iOS & iPadOS)

  • Connect: Settings › Bluetooth → cardoO Buds → Connect.
  • Temporary disconnect: tap Disconnect (avoid Forget unless you need to re-pair).
  • Take over from another device: open Settings › Bluetooth, tap Connect for cardoO Buds — the other device drops automatically.

Android

  • Connect: Settings › Bluetooth → Available devices → cardoO Buds → Pair / Connect.
  • Temporary disconnect: use Disconnect only (don’t use Forget unless re-pairing).
  • Take over: open Bluetooth and tap Connect for cardoO Buds — the other device disconnects automatically.

Operating Rules

  • One active device at a time.
  • Calls take priority when switching.
  • Use Disconnect / Connect instead of Forget for quick switching.
  • If a device “holds” the link, Disconnect there first, then Connect from the target.
  • If switching is slow: pause on device #1, play on device #2.

Quick Fixes

  • Toggle Bluetooth Off/On on the device you’re connecting from.
  • Open and close the charging case to re-advertise pairing mode.
  • Quick reset: with the buds in the case, hold Pair for 10–15 seconds until the LED blinks rapidly, then reconnect.
  • Keep your firmware up to date using the cardoO app for improved stability and faster switching.