1. Introduction
The Aspera F50 4G Flip Phone is designed for simplicity and ease of use. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device. It features 4G connectivity, a compact flip design, a charging cradle for convenience, and an integrated SOS button for emergencies.
2. Setup
2.1. Battery and SIM Card Installation
- Carefully remove the back cover of the phone.
- Insert your Nano SIM card into the designated slot. Ensure the gold contacts face downwards and the notched corner aligns correctly.
- Insert the provided Lithium-ion battery into its compartment, aligning the contacts.
- Replace the back cover, ensuring it clicks securely into place.
2.2. Charging Your Phone
Your Aspera F50 can be charged using two methods:
- Using the Charging Cradle: Place the F50 into the charging cradle. The indicator on the front display will signal that the battery is charging.
- Using the USB-C Port: Connect the provided USB-C charging cable directly to the phone's USB-C port and then to a power adapter. The USB-C connector is reversible, allowing for easy insertion.

3. Operating Your Phone
3.1. Power On/Off
- To power on, press and hold the red 'End Call' button until the screen illuminates.
- To power off, press and hold the red 'End Call' button, then confirm 'Power off' on the screen.
3.2. Making and Receiving Calls
- Making a Call: Dial the number using the keypad and press the green 'Call' button.
- Receiving a Call: When the phone rings, open the flip and press the green 'Call' button to answer. Close the flip or press the red 'End Call' button to end the call.
- Speed Dial: Utilize the dedicated M1, M2, M3 keys for frequently called numbers. Refer to your phone's settings to assign contacts to these keys.
3.3. Sending SMS Messages
- Navigate to the 'Messages' menu.
- Select 'Write Message' or 'New SMS'.
- Enter your message using the keypad.
- Enter the recipient's number or select from contacts, then send.
3.4. Using the Camera
The Aspera F50 features a 0.3MP rear camera. Access the camera from the main menu to take photos or record videos.
3.5. SOS Emergency Button
The integrated SOS button on the back cover can be configured to dial emergency contacts when pressed for 5 seconds. Ensure emergency contacts are set up in the phone's settings for this feature to function correctly.
3.6. Torch Function
Activate the built-in torch (flashlight) function for illumination in dark environments. This can typically be accessed via a dedicated button or through the phone's menu.


4. Maintenance
4.1. Cleaning
- Use a soft, dry, lint-free cloth to clean the phone's screen and body.
- Avoid using harsh chemicals, cleaning solvents, or strong detergents.
4.2. Battery Care
- Do not expose the battery to extreme temperatures.
- Avoid fully discharging the battery frequently to prolong its lifespan.
- If the phone will not be used for an extended period, charge it to about 50% before storing.
4.3. Storage
Store the phone in a cool, dry place away from direct sunlight and extreme temperatures.
5. Troubleshooting
5.1. Phone Not Turning On
- Ensure the battery is correctly inserted and charged.
- Connect the phone to the charger and wait a few minutes before attempting to power on again.
5.2. No Network Signal
- Check if the SIM card is properly inserted.
- Ensure you are in an area with network coverage.
- Restart the phone.
5.3. Charging Issues
- Verify that the charging cable and adapter are working correctly.
- Ensure the USB-C port or charging cradle contacts are clean and free of debris.
- Try charging with the alternative method (cradle or USB-C cable).
5.4. SOS Button Not Working
- Confirm that emergency contacts have been set up in the phone's settings.
- Ensure the button is pressed and held for the required 5 seconds.
For further assistance, please refer to the Warranty & Support section.
6. Specifications
| Feature | Detail |
|---|---|
| Model | Aspera F50 |
| Display Size | 2.4 Inches (internal), External indicators for Call, Message, Charge |
| Display Type | LCD |
| Resolution | 320 x 240 |
| RAM | 48MB |
| ROM (Internal Storage) | 128MB |
| Expandable Memory | Micro SD card up to 32GB |
| Battery Capacity | 1000mAh Lithium-ion |
| Cellular Technology | 4G, 3G (VoLTE supported) |
| Network Frequencies | 4G Band 1/3/5/7/8/28a+b; 3G WCDMA 850/900/2100MHz; 2G 850/900/1800/1900Mhz |
| Camera | Rear 0.3MP Fixed Focus |
| Connectivity | Bluetooth 4.2, USB-C port, 3.5mm headphone jack |
| SIM Type | Single Nano SIM |
| Dimensions | 104 x 56 x 17.1mm |
| Weight | 106g |
| Special Features | Integrated SOS button, Charging Cradle, Torch function, Hearing Aid Compatible |
7. Warranty & Support
7.1. Product Warranty
The Aspera F50 4G Flip Phone comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms, conditions, and duration of coverage. Keep your proof of purchase for warranty claims.
7.2. Customer Support
For technical support, service, or warranty inquiries, please contact Aspera customer service. Contact details can typically be found on the official Aspera website or in the product packaging.
Online Resources: Visit the official Aspera website for FAQs, software updates, and additional support information.





