1. Introduction
This manual provides instructions for the safe and efficient use of your Retoo M031 Car Phone Holder. Please read it thoroughly before installation and operation to ensure proper functionality and longevity of the product. This device is designed to securely hold smartphones up to 6.8 inches in compatible car air vents.
2. Product Features
- Versatile and Compact: The holder is designed to fit most vertical or horizontal car air vents. Its adjustable clamp accommodates smartphones with widths between 65mm and 80mm, supporting devices up to 6.8 inches.
- 4-Point Secure Grip: Equipped with four contact points, the holder ensures a stable and firm grip on your smartphone. The arms feature an automatic locking mechanism once the phone is placed.
- Comfortable and Rotatable: The holder automatically expands and retracts for ease of use. It offers 360-degree rotation, allowing you to adjust the phone's orientation for optimal viewing. It supports convenient one-handed operation.
- Durable Construction: The jaws are lined with elastic silicone pads to prevent scratches and damage to your phone. The holder is constructed from durable plastic, offering resistance to wear and mechanical impact.
- Charging Accessibility: The design includes side fixings that allow easy access to your phone's charging port while it is mounted.
3. Setup and Installation
- Identify Compatible Air Vent: Ensure your car's air vent has horizontal or vertical slats. The holder is not compatible with round or irregularly shaped vents.
- Open the Clamp: Press the button on the holder to open its clamp mechanism.
- Position on Air Vent: Carefully slide the holder's clamp onto one of the air vent slats.
- Secure the Holder: Release the button to allow the clamp to firmly grip the air vent. Ensure it is stable and does not wobble.
Important Note:
- If your phone has a thick case, it might need to be removed to ensure a firm grip and proper engagement with the four support points.
- The phone will not remain secure if it extends beyond the four support points of the holder.

4. Operating Instructions
- Inserting the Phone: Gently place your smartphone into the holder. The side arms will automatically adjust and close around the device, securing it in place.
- Adjusting Viewing Angle: The holder features a 360-degree rotatable ball joint. Adjust the phone's position to your preferred horizontal or vertical viewing angle.
- One-Hand Operation: The design allows for easy one-handed insertion and removal of your phone, promoting safer driving.




5. Maintenance
- Cleaning: To clean the holder, wipe it with a soft, slightly damp cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these may damage the material.
- Inspection: Periodically inspect the holder for any signs of wear, cracks, or damage, especially on the gripping arms and the air vent clamp. Discontinue use if significant damage is observed.
- Storage: When not in use for extended periods, store the phone holder in a cool, dry place away from direct sunlight and extreme temperatures.
6. Troubleshooting
- Phone not holding securely:
- Ensure your phone's dimensions are within the compatible range (65-80mm width, up to 6.8 inches).
- Remove any bulky phone cases that might prevent the holder's arms from closing properly or engaging all four support points.
- Verify that the phone is centered and fully seated within the holder's grip.
- Holder is loose on the air vent:
- Confirm that the holder's clamp is fully engaged with a sturdy air vent slat.
- Ensure your air vent type is compatible (vertical or horizontal slats). Round or irregular vents may not provide a secure fit.
- Difficulty rotating the phone:
- Check for any obstructions around the ball joint.
- Ensure the rotation mechanism is not jammed. Avoid forcing rotation if resistance is met.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | M031 |
| Brand | Retoo |
| Dimensions (L x W x H) | 50 x 120 x 40 mm (5 x 12 x 4 cm) |
| Weight | 35 Grams |
| Material | Plastic |
| Color | Black |
| Compatible Phone Size | Up to 6.8 inches (65-80mm width) |
| Mount Type | Car Air Vent (Vertical or Horizontal) |
| Maximum Weight Capacity | 250 Grams |
| Water Resistance Level | Water-resistant |



8. Warranty and Support
For warranty information, technical assistance, or customer support regarding your Retoo M031 Car Phone Holder, please refer to the documentation provided at the time of purchase or contact Retoo customer service through the platform where the product was acquired. You may also visit the official Retoo website for additional support resources.