Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your MYMAHDI MP3 Player. Please read thoroughly to ensure optimal performance and longevity of your device.
What's in the Box
Your MYMAHDI MP3 Player package includes the following items:
- 1 x Music Player (64GB card inserted)
- 1 x USB cable
- 1 x Earphones
- 1 x English Manual
- 1 x AUX Cable
- 1 x Transparent Case

Figure 1: Included accessories with the MYMAHDI MP3 Player.
Product Overview
The MYMAHDI MP3 Player is a versatile portable media device designed for high-quality audio and video playback, along with smart features for an enhanced user experience.

Figure 2: Front view of the MYMAHDI MP3 Player with its touch screen interface.

Figure 3: Side profile of the MP3 Player highlighting physical controls.

Figure 4: Bottom view of the MP3 Player with its various ports.
Key Features
- Smooth Android OS: Built-in 16GB ROM, 8-core CPU 1.9GHz processor for fast and smooth operation. Supports external storage expansion up to 1TB via card slot.
- Smart WiFi Connectivity: Download, upload, and stream music/videos online. Pre-installed apps include Amazon Music, Apple Music, Spotify, Facebook, Audible, Deezer, Kindle, Pandora, Twitter, TIDAL, FM Radio, Sound Recorder, Videos.
- Bluetooth 5.0: Two-way connection for faster, more stable pairing with Bluetooth headsets, speakers, car audio, and mobile phones. Supports automatic connection and file transfer.
- HiFi Sound Quality: Built-in HiFi lossless sound speaker for playback without earphones. Supports synchronous LRC lyrics display and FM radio recording.
- Audio-Visual Experience: 4-inch 1080P HD full touch screen display for films and music. Sensitive touch operation with one-key lock screen function.
- Expandable Storage: Supports TF expansion card up to 128GB (card not included).
- Voice Recording: Supports MIC recording with MP3 format.
- E-book Reading: Supports TXT format with bookmarks.
- Additional Tools: Includes alarm clock, stopwatch, and calendar functions.

Figure 5: The device supports external TF card expansion for increased storage capacity.

Figure 6: The MP3 Player comes pre-loaded with popular applications.

Figure 7: Bluetooth 5.0 provides stable and fast wireless connections.
Setup
Initial Charge
Before first use, fully charge your MYMAHDI MP3 Player using the provided USB cable. Connect the micro USB end to the player's charging port and the USB-A end to a computer or a compatible USB wall adapter.
Powering On/Off
To power on the device, long-press the power button located on the side. To power off, long-press the power button again until the device shuts down.
Inserting a Micro SD Card
The device supports external TF (Micro SD) cards up to 1TB. Locate the card slot on the side of the player. Gently insert the Micro SD card with the gold contacts facing upwards until it clicks into place.
Figure 8: A user demonstrating the insertion of a Micro SD card into the MYMAHDI MP3 Player.
Connecting to a Computer
Connect the player to your computer using the supplied USB cable. The device will appear as a removable disk, allowing you to transfer music, videos, and other files by dragging and dropping them into the appropriate folders.
Figure 9: The player supports direct file transfer from mobile phones using an OTG connector, as shown in the video.
Operating Instructions
The MYMAHDI MP3 Player features a touch screen interface with additional touch-sensitive buttons below the display for navigation. The main menu provides access to various functions.
Music Playback
Navigate to the 'Music' icon on the main menu and press to confirm. You can browse by all songs, artists, albums, genres, or playlists. The player supports multiple lossless and standard audio formats including MP3, WMA, OGG, APE, FLAC, WAV, AAC, and ACELP.
Video Playback
Select the 'Videos' icon from the main menu. The player supports 720P/1080P full format HD video playback. Supported formats include RM, RMVB, AVI, MKV, WMV, VOB, MOV, FLV, ASF, DAT, MP4, 3GP, MPG, MPEG. Note that some formats may require conversion using the provided software tool on a computer.
FM Radio
To access the FM Radio, select the 'FM Radio' icon. The earphones or an AUX cable must be plugged in to act as an antenna. You can manually tune or auto-scan for stations. The player also supports recording FM radio broadcasts.
Voice Recording
Open the 'Sound Recorder' icon to begin recording. The device features an independent intelligent noise reduction chip for clear, linear recording, making it suitable for various environments.
E-book Reader
Open the 'E-book' icon to access your text files. The player supports TXT format for reading. You can navigate through pages using the directional buttons.
Bluetooth Connectivity
From the main menu, select the 'Bluetooth' icon. You can search for and pair with compatible Bluetooth devices such as headphones, speakers, or car audio systems. The Bluetooth 5.0 ensures a stable and fast connection.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Avoid using harsh chemicals or solvents.
- Storage: Store the player in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the device frequently. Charge it regularly, even if not in use.
- Software Updates: Check the manufacturer's website periodically for any firmware updates to ensure optimal performance and new features.
Troubleshooting
Player Does Not Turn On
- Ensure the battery is charged. Connect the player to a power source and allow it to charge for at least 30 minutes before attempting to power on again.
- If the device is completely unresponsive, try long-pressing the power button for 10-15 seconds to force a reset.
Unable to Transfer Files
- Verify the USB cable connection to both the player and the computer. Try a different USB port or cable.
- Ensure the player is in data transfer mode if prompted.
- Check if the player's internal storage or the Micro SD card is full. Delete unnecessary files to free up space.
- If transferring video files, ensure they are in a supported format (AVI, AMV) and have the correct resolution (320x240). Use the provided conversion tool if necessary.
Poor Sound Quality
- Check the earphones or connected Bluetooth device. Try a different pair of earphones or speaker.
- Ensure the volume is not set too low or too high, which can cause distortion.
- For FM radio, ensure the earphones are properly plugged in to act as an antenna for better reception.
Specifications
| Product Dimensions | 3.75 x 1.69 x 0.19 inches |
| Item Weight | 1.9 ounces |
| Item Model Number | M310-Black-16GB |
| Battery | 1 Lithium Metal battery (included) |
| Operating System | Android |
| Wireless Communication | Wi-Fi, Bluetooth 5.0 |
| Display Technology | IPS or OLED |
| Screen Size | 4 Inches |
| Memory Storage Capacity | 16 GB (expandable up to 1TB via Micro SD) |
| Audio Format Support | MP3, WMA, OGG, APE, FLAC, WAV, AAC-LC, ACELP |
| Video Format Support | RM, RMVB, AVI, MKV, WMV, VOB, MOV, FLV, ASF, DAT, MP4, 3GP, MPG, MPEG |
| Battery Life (Music Playback) | 65-80 hours (headphone screen saver state) |
| Battery Life (Video Playback) | 9.6 hours |
Warranty and Support
Your MYMAHDI MP3 Player comes with a manufacturer's warranty. Please refer to the included Warranty Card for specific terms and conditions. For further assistance or troubleshooting not covered in this manual, please visit the official MYMAHDI store on Amazon or contact customer support.
Official User Manual (PDF): Download PDF