1. Product Overview
The HIFI WALKER G7 is a versatile Android 13 MP3 player designed for a rich audio and media experience without smartphone distractions. It features a 4-inch full touch screen, Wi-Fi, Bluetooth 5.0, and expandable storage.

Figure 1: Front and Rear View of the HIFI WALKER G7 MP3 Player
2. What's in the Box?
- 1 x HIFI WALKER G7 Music Player
- 1 x USB Type-C Cable
- 1 x User Manual (this document)
- 1 x Strap
- 1 x Protective Cover
- 1 x Protective Film
3. Button Functions
Familiarize yourself with the physical buttons and ports on your HIFI WALKER G7:
- Volume Up: Increases audio volume.
- Volume Down: Decreases audio volume.
- Reset Hole: For system reset in case of a crash.
- Power Button: Turns the device on/off, and controls screen on/off.
- Camera: Rear-facing camera lens.
- Speaker: Built-in audio output.
- TF Card Slot: For inserting a microSD/TF card to expand storage.
- Mic Hole: Built-in microphone for recording.
- USB Type-C Port: For charging and data transfer.
- Earphone Port: 3.5mm jack for headphones.
Refer to the diagram in the included PDF manual for a visual representation of button locations.
4. Setup
4.1. Charging the Device
Before first use, fully charge your HIFI WALKER G7.
- Connect the USB Type-C cable to the device's USB Type-C port.
- Connect the other end of the cable to a wall charger (5V/1A recommended) or a computer's USB port.
- The battery will fully charge in approximately 3 hours with a wall charger. Charging time may vary when using a computer.
- The battery symbol on the screen will stop flashing when charging is complete.
4.2. Power On/Off
- To Power On: Press and hold the Power Button (4) until the screen lights up.
- To Power Off: Press and hold the Power Button (4) until the power-off options appear on screen, then select 'Power off'.
- Screen On/Off: Short press the Power Button (4) to turn the screen on or off (sleep/wake).
4.3. Inserting a TF Card (MicroSD)
To expand the device's storage, you can insert a TF (microSD) card (up to 512GB supported).
- Locate the TF Card Slot (7) on the device.
- Gently insert the TF card into the slot with the gold contacts facing down, pushing it inward until you hear a click.
- To remove, push the card inward again until it clicks, then release, and the card will eject.
- Important: Do not remove the TF card during data transfer or operation to prevent data corruption.
4.4. Connecting to Wi-Fi
The HIFI WALKER G7 supports dual-band Wi-Fi (2.4G/5G).
- From the home screen, navigate to Settings.
- Tap on WLAN (Wi-Fi).
- Toggle the Wi-Fi switch to On.
- The device will scan for available networks. Select your desired network from the list.
- Enter the password if prompted, then tap Connect.
4.5. Connecting Bluetooth Devices
The device features Bluetooth 5.0 for stable and fast wireless connections.
- From the home screen, navigate to Settings.
- Tap on Bluetooth.
- Toggle the Bluetooth switch to On.
- Ensure your Bluetooth device (headphones, speaker, etc.) is in pairing mode.
- The HIFI WALKER G7 will scan for available devices. Select your device from the list to pair.
5. Operating Instructions
5.1. Basic Operations
- Volume Adjustment: Use the Volume Up (1) and Volume Down (2) buttons, or adjust via the on-screen slider when the volume bar appears.
- Take Photo: Unlock the screen, tap the Camera icon to enter photo mode, then tap the shutter button on screen.
- Reboot Player: If the device freezes, press and hold the Power Button (4) for 10 seconds to force a reboot. All settings will be reset to factory defaults.
- Reset System: If the device crashes, use a thin pin to press the 'Reset Hole' (3) to force a system restart.
5.2. Functional Manuals
The HIFI WALKER G7 runs on Android 13, providing access to various applications and functions.
- Gallery: View photos and images. Options include delete, slideshow, edit, rotate, crop, set as background, and print.
- FM Radio: Tune into FM stations. Features include manual tuning, quick selection of saved stations, automatic search, headphone/speaker selection, and recording FM broadcasts.
- Recorder: Record audio. Supports start, pause/resume, save, and viewing recorded files (WAV and MP3 formats).
- Calendar: Manage dates, weeks, months, and schedules. Add notes and events.
- File Management: Browse local and TF card files (music, video, pictures). Supports copying, cutting, sharing, deleting, renaming.
- Camera: Use the built-in 5MP camera for photos and videos. Features include viewfinder mode, EIS sound recording, white balance, video quality settings, and zoom.
5.3. Settings Menu
Access the Settings menu for comprehensive device configuration:
- WLAN: Connect to Wi-Fi networks.
- Bluetooth: Manage Bluetooth connections.
- Memory: Check internal storage status.
- Applications & Notifications: Manage apps and notification permissions.
- Battery: View battery level and power-saving options.
- Display: Adjust brightness, night mode, wallpaper, sleep time, rotation, font size/style, screen saver.
- Sound: Adjust media, alarm, and notification volumes.
- Storage: Manage internal and TF card storage.
- Security: Set lock screen password.
- Auto Shutdown: Configure automatic power-off timer.
- Timer On/Off: Schedule automatic power-on and power-off times.
- System: Language, input methods, date/time, factory reset, device information.
5.4. Media Playback
The HIFI WALKER G7 supports various streaming services and local media playback.

Figure 2: Enjoy music and media without your phone.

Figure 3: Access your favorite music and audiobook apps.

Figure 4: Immerse yourself in superior Hi-Fi sound with various audio formats.
- Music: Use pre-installed music players or download apps like Spotify, Apple Music, Amazon Music, Tidal, Pandora, Audible, Deezer from Google Play Store.
- Audiobooks: Compatible with Audible and Kindle for audiobook playback.
- Video: Watch videos on YouTube or other video apps. Supports AVI, MKV, RMVB, MP4, MPG, MOV formats.
- Games: Download and play recreational games from the Google Play Store.
Video 1: Official product demonstration of the HIFI WALKER G7.
6. Maintenance
6.1. Battery Management
- New batteries require several charge/discharge cycles to reach optimal performance.
- If not used for extended periods, charge and discharge the device at least once a month to prevent battery damage from over-consumption.
- Damage due to over-consumption or using non-approved chargers is not covered by warranty.
6.2. TF Card Handling
- Always insert the TF card correctly.
- Do not remove the TF card during read/write operations.
- Avoid high temperature and humidity environments for storage.
- Keep the TF card away from liquids and corrosive materials.
6.3. General Care
- Do not open the product casing.
- Do not expose the device to excessive heat, water, moisture, or direct sunlight.
- Clean the screen with a soft, dry cloth.
7. Troubleshooting (FAQ)
- Can't power ON the G7: Press and hold the Power button for 3 seconds. If it doesn't light up, charge for at least 10 minutes and try again. If the screen remains off after charging, contact support.
- Player freezes: Press and hold the Power button for 8 seconds to reset the device. Settings will return to factory defaults.
- Can't hear music when playing: Check volume level, ensure earphones are properly plugged in and undamaged, and verify the music file format is supported.
- Navigation bar disappears: Check Settings > Navigation bar > Hide navigation switch. If it's not hidden, pull down from the status bar to reveal it.
- Some video formats cannot be opened: The built-in video player has limited decoding. Try third-party video software. RMVB format is not supported due to copyright.
- Bluetooth connection failure: Ensure Bluetooth is on for both devices and they are in pairing mode. Disconnect from other devices if previously connected. Check Bluetooth version compatibility (above 2.1 recommended).
- Frequent Bluetooth disconnection: Ensure the player is not near 2.4G signal sources or obstacles. Maintain a direct distance of 8-10m (or 4-5m from obstacles) within the Bluetooth range.
- How to Connect G7 Device to Mac:
- Download 'Android File Transfer' app from
http://android.p2hp.com/filetransfer/index.html - Install the app.
- Open the app and connect your G7 to Mac via USB cable. Your Mac will then read the device content.
- Download 'Android File Transfer' app from
- Forgot screen password: Use the universal password: 123789.
- Parental control: The G7 comes with 'teenlimit'. You can also download 'Parental Control' apps from Google Play.
8. Specifications
| Feature | Specification |
|---|---|
| Model | G7 |
| Dimensions (WxHxD) | 106 x 63 x 12mm (approx. 105 x 62 x 11.7mm) |
| Product Weight | 107g |
| Display Size | 4.0 inches (480*800 resolution) |
| Battery Specification | Lithium battery, 2000mAh |
| Battery Life | 10 - 20 hours (up to 50 hours for audio) |
| Recommended Charger | 5V/1A |
| Standby Time | 5 days |
| Audio Format Support | MP3, WAV, Ogg, FLAC, APE, AAC |
| Video Format Support | AVI, MKV, RMVB, MP4, MPG, MOV, RM, FLV, DAT, TS |
| Recording Formats | WAV, MP3 |
| Camera | 5MP HD Rear Camera |
| Image Formats | JPEG, BMP, GIF, PNG |
| Interface | Type-C USB2.0 |
| External Memory | Micro SD/TF Card Slot (Supports up to 512GB) |
| Operating System | Android 13 |
| RAM | 3GB |
| Wireless Connectivity | Dual-band Wi-Fi (2.4G/5G) & Bluetooth 5.0 |
| Certifications | CE, FCC, RoHS |
9. User Tips
- For optimal audio quality, consider using high-quality wired headphones or a good Bluetooth speaker.
- Regularly clear cache from apps to maintain smooth performance, especially if you install many applications.
- Utilize the power-saving features in settings to extend battery life during long trips.
- Keep your device's software updated for the latest features and security patches.
10. Support & Contact Information
For further assistance or inquiries, please use the following contact details:
- Website: www.hifiwalker.com
- Facebook: @HIFIWALKER.official
- YouTube: HIFI WALKER
- Email: Service@hifiwalker.com
Manufacturer: Shenzhen Yudongxingzhe Limited
rm510, BLK A, QiXing ChuangYiGongchang,
BaoAn, 518101 Shenzhen, China
Email: yudong@outlook.com
Warning:
- Lithium battery inside.
- Do not open the product.
- Do not expose to heat, water, moisture, or direct sunlight.