Introduction
This manual provides instructions for the OPPO Enco X3i True Wireless Earbuds. It covers setup, operation, maintenance, and troubleshooting to ensure optimal performance and user experience. Please read this manual thoroughly before using your earbuds.
Package Contents
Upon opening the package, verify that all items are present:
- OPPO Enco X3i Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- Silicone Ear Tips (S/M/L sizes)
- User Manual

Image: Contents of the OPPO Enco X3i package, including earbuds, charging case, USB-C cable, and various ear tip sizes.
Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case.
- Place the earbuds into the charging case.
- Connect the USB-C charging cable to the charging port on the case and to a power source.
- The indicator light on the case will show charging status. A full charge for the case takes approximately 10 minutes for 7 hours of listening time, or longer for a complete charge. Earbuds charge in about 10 minutes for 2 hours of listening.

Image: The OPPO Enco X3i charging case, showing the LED indicator light which signifies charging status.
2. Pairing with a Device
The OPPO Enco X3i earbuds use Bluetooth 5.3 for connection.
- Ensure the earbuds are in the charging case and the case lid is open.
- On your smartphone or tablet (Android or iOS), go to Bluetooth settings and enable Bluetooth.
- Select "OPPO Enco X3i" from the list of available devices.
- Once connected, a confirmation sound will play, and the earbuds are ready for use.

Image: A pair of OPPO Enco X3i earbuds, illustrating their design for wireless connection.
The earbuds support simultaneous connection to two devices, allowing for quick switching.
Operating Instructions
Wearing the Earbuds
Choose the silicone ear tips that provide the best fit for comfort and sound quality. Insert the earbuds gently into your ear canal and rotate them slightly until they feel secure.

Image: A close-up of the OPPO Enco X3i earbuds, highlighting their ergonomic shape designed for a secure fit.
Touch Controls
The Enco X3i earbuds feature a touch-sensitive area for various functions. Controls can be customized via the companion app (if available).
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap on the right earbud.
- Previous Track: Double tap on the left earbud.
- Answer/End Call: Single tap on either earbud.
- Reject Call: Press and hold either earbud.
- Activate Noise Cancellation/Transparency Mode: Press and hold either earbud (cycle through modes).
- Volume Control: Swipe up or down on the stem of either earbud (if supported and enabled).

Image: A single OPPO Enco X3i earbud, indicating the general area for touch controls on its stem.
Active Noise Cancellation (ANC)
The Enco X3i features AI-powered active noise cancellation with 4 different modes. Press and hold the touch area to cycle through ANC modes (e.g., Noise Cancellation On, Transparency Mode, ANC Off).
Maintenance
Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Remove ear tips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Do not use abrasive cleaners or solvents.
Storage
When not in use, store the earbuds in their charging case to protect them and keep them charged. Store in a cool, dry place away from direct sunlight and extreme temperatures.
Water and Dust Resistance (IP55)
The OPPO Enco X3i earbuds are rated IP55, meaning they are resistant to dust and splashes of water. This makes them suitable for workouts and light rain. However, they are not waterproof and should not be submerged in water. Ensure earbuds are dry before placing them back in the charging case.
Troubleshooting
- Earbuds not pairing:
- Ensure both earbuds are in the charging case and the case has sufficient battery.
- Open the case lid to enter pairing mode.
- On your device, forget the "OPPO Enco X3i" from Bluetooth settings and try pairing again.
- Restart your device.
- No sound from one earbud:
- Place both earbuds back in the case, close the lid, wait a few seconds, then open it again.
- Check the earbud's battery level.
- Clean the charging contacts on both the earbuds and the case.
- Poor sound quality:
- Ensure ear tips are properly fitted and clean.
- Check for obstructions in the earbud's speaker mesh.
- Move closer to your connected device to avoid interference.
- Earbuds not charging:
- Ensure the charging cable is securely connected to both the case and the power source.
- Check if the charging port on the case is clean and free of debris.
- Try a different USB-C cable and power adapter.
Specifications
| Feature | Detail |
|---|---|
| Model Name | Enco X3i |
| Driver Type | Dual Dynamic (10.4 mm and 6 mm) |
| Noise Control | AI Active Noise Cancellation (4 modes) |
| Bluetooth Version | 5.3 |
| Connectivity | Wireless (Binaural, Low Latency, Multi-device) |
| Earbud Battery Capacity | 58 mAh |
| Case Battery Capacity | 520 mAh |
| Earbud Charging Time (10 min) | 2 hours listening time |
| Case Charging Time (10 min) | 7 hours listening time |
| Water Resistance | IP55 (Dust and Splash Resistant) |
| Speaker Sensitivity | 110 ± 1.3 dB |
| Frequency Range | 20 Hz - 20,000 Hz |
| Audio Latency | 15 Milliseconds |
| Compatible Devices | Phones, Tablets (Android and iOS) |
| Control Method | Tactile (Touch Control) |
Warranty and Support
For warranty information and customer support, please refer to the official OPPO website or contact your local OPPO service center. Keep your proof of purchase for warranty claims.
Online Support: Visit OPPO Support for FAQs, software updates, and contact options.





