1. Introduction
This manual provides detailed instructions for the safe and efficient operation of your Tangxi Flip Phone, Model Tangxi5b7r2yxfc4-12. Please read this manual thoroughly before using the device to ensure proper functionality and to understand all features.
The Tangxi Flip Phone is a compact mobile device designed for essential communication. It supports GSM 2G, 3G, and 4G networks, offering features such as Bluetooth connectivity, an address book, messaging, and an alarm function. Its design prioritizes ease of use and portability.

Figure 1: Tangxi J30 Small Flip Phone in red, shown open with its display and keypad. An elderly person is visible in the background, illustrating a common user demographic.
2. Safety Information
- Do not expose the phone to extreme temperatures, direct sunlight, or moisture.
- Avoid dropping the phone or subjecting it to strong impacts.
- Use only manufacturer-approved chargers and accessories.
- Keep the phone away from medical devices, as it may interfere with their operation.
- The phone's radiation rate is significantly lower than general smartphones, making it a suitable choice for users concerned about signal radiation.
3. Setup
3.1 SIM Card Installation
The Tangxi Flip Phone supports NANO SIM cards for GSM 2G, 3G, and 4G networks. Ensure your SIM card is compatible before installation.
- Locate the SIM card slot on the phone. It is typically covered by a soft rubber flap.
- Gently open the soft rubber cover and push the card slot fastener to the right to unlock it.
- Flip open the metal cover of the SIM card slot.
- Insert your NANO SIM card into the slot, ensuring proper orientation as indicated by the diagram.
- Close the metal cover and push the fastener to the left to lock it in place.
- Replace the soft rubber cover.

Figure 2: Step-by-step guide for inserting a NANO SIM card into the phone. It illustrates unlocking the slot, placing the SIM, and securing it.

Figure 3: A close-up image demonstrating the physical insertion of a NANO SIM card into the phone's slot.
3.2 Charging the Battery
Your phone comes with a 300 mAh battery. Before first use, fully charge the phone.
- Connect the Micro USB charging cable to the charging port located on the side of the phone.
- Connect the other end of the cable to a compatible USB power adapter or computer USB port.
- The phone's display will indicate charging status.
- A full charge typically provides 4-5 hours of continuous calling or 3-4 days of standby time.

Figure 4: Image highlighting the Micro USB charging port on the top edge of the closed flip phone.
4. Operating Instructions
4.1 Basic Functions
The Tangxi Flip Phone offers a range of essential functions for communication and daily utility.

Figure 5: An overview of the phone's primary features, including communication, utility, and safety functions.
- Power On/Off: Press and hold the power button (usually the red 'End Call' button) to turn the phone on or off.
- Making Calls: Dial the number using the keypad and press the green 'Call' button.
- Answering Calls: Flip open the phone or press the green 'Call' button when a call comes in. The phone supports an auto-answer function, which can be configured in settings.
- Messaging: Access the messaging menu to compose and send text messages.
- Address Book: Store and manage your contacts. The phone supports a whitelist address book for privacy.
- Alarm: Set alarms for reminders.
- Magic Sound: Explore sound customization options.
- SOS Setting: Configure emergency contact numbers for quick access in critical situations.
- Music: Play audio files (if supported by internal storage or memory card).
4.2 Bluetooth Connectivity
The phone features Bluetooth for connecting to other smartphones, enabling functions like Bluetooth dialing, smart anti-loss/anti-theft, and syncing phone information.
- To enable Bluetooth, navigate to the settings menu and select the Bluetooth option.
- Turn Bluetooth on and search for available devices.
- Select the desired device to pair. Follow on-screen prompts to complete the pairing process.
- Once connected, you can use the phone as a Bluetooth dialer or for data synchronization.
4.3 Display and Keypad
The phone features an HD OLED 0.66-inch screen with a resolution of 64 x 48, providing clear visibility for incoming call information and menu navigation. The silicone keypad ensures comfortable and accurate input.

Figure 6: Examples of practical applications for the flip phone, such as for children, in demanding work environments, or as a reliable backup device.
5. Maintenance
- Keep the phone clean by wiping it with a soft, dry cloth.
- Avoid using harsh chemicals or abrasive cleaners.
- Store the phone in a cool, dry place when not in use.
- Do not attempt to disassemble the phone, as this will void the warranty.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Phone does not power on. | Low battery; faulty battery; power button issue. | Charge the phone for at least 30 minutes. Ensure the battery is properly inserted. If problem persists, contact support. |
| Cannot make or receive calls. | No SIM card; incorrect SIM card; no network signal; SIM card not activated. | Ensure SIM card is correctly installed and activated. Check for network signal. Verify SIM card compatibility (GSM 2G/3G/4G). |
| Bluetooth not connecting. | Bluetooth is off; device not discoverable; pairing issue. | Ensure Bluetooth is enabled on both devices. Make sure the other device is in pairing mode. Try restarting both devices. |
| Poor audio quality during calls. | Weak network signal; speaker/microphone obstruction. | Move to an area with better network coverage. Ensure speaker and microphone are not blocked. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Tangxi |
| Model Name | Tangxi5b7r2yxfc4-12 |
| Connectivity Technology | GSM (2G, 3G, 4G) |
| Operating System | Proprietary (Flip Phone OS) |
| Display Resolution | 64 x 48 (0.66 inch OLED) |
| Memory Storage Capacity | 96 MB |
| RAM Memory Installed Size | 96 MB |
| Battery Capacity | 300 Milliamp Hours |
| Item Weight | 2.26 ounces |
| Package Dimensions | 4.72 x 2.76 x 0.79 inches |
8. Product Video Overview
Watch this video for a general overview of the Tangxi Flip Phone's features and operation.
Video 1: A comprehensive demonstration of the Tangxi Flip Phone, covering its design, key features, and basic usage.
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or visit the official Tangxi website. Keep your proof of purchase for warranty claims.
Return Policy: This product is eligible for a 30-day refund/replacement policy.
Protection Plans: Optional 2-Year Protection Plan and Complete Protect monthly plans are available for extended coverage.