1. Introduction
This manual provides essential information for the SAMSUNG Galaxy Z Fold 4 (Model SM-F936U1) smartphone. It covers device setup, operational procedures, maintenance guidelines, and troubleshooting tips to ensure optimal use of your device. The Galaxy Z Fold 4 is designed to enhance productivity and entertainment with its unique foldable screen and multitasking capabilities.
2. Device Setup
2.1. Unboxing and Initial Charge
Upon unboxing, ensure all included accessories are present. Connect the provided USB Type-C cable to the device and a compatible power adapter to fully charge the battery before first use.

Image: The SAMSUNG Galaxy Z Fold 4 in its folded state, showing the side profile with buttons and ports. This view highlights the compact form factor when closed.
2.2. SIM Card Installation
The Galaxy Z Fold 4 supports Dual SIM functionality, including Nano SIM cards and eSIM.
- Locate the SIM card tray on the side of the device.
- Insert the SIM ejection tool into the small hole next to the tray to open it.
- Place your Nano SIM card(s) into the tray with the gold contacts facing down.
- Carefully reinsert the tray into the device.
- For eSIM activation, follow the on-screen prompts during initial setup or refer to your carrier's instructions.

Image: The SAMSUNG Galaxy Z Fold 4 shown folded, displaying the cover screen at a slight angle. This view illustrates the device's appearance when closed, ready for single-hand use.
2.3. Initial Device Setup
After powering on, the device will guide you through the initial setup process, including:
- Language selection.
- Wi-Fi network connection.
- Google account sign-in.
- Data transfer from a previous device.
- Setting up biometric security (Fingerprint Recognition).
- Reviewing and agreeing to terms and conditions.
3. Operation
3.1. Foldable Screen and Display Modes
The Galaxy Z Fold 4 features a unique foldable design. When closed, use the cover screen for quick tasks. Unfold the device to access the larger 7.6-inch main display with a 120Hz refresh rate for an immersive experience.

Image: The SAMSUNG Galaxy Z Fold 4 fully unfolded, showcasing its large main display. This view emphasizes the tablet-like experience for enhanced viewing and productivity.
3.2. Flex Mode
Partially fold the device to activate Flex Mode. This allows the phone to stand on its own, enabling hands-free activities such as video calls, watching content, or taking notes.
3.3. Multi-View Window
Utilize the Multi-View Window feature to run multiple applications simultaneously on the large main screen. Drag and drop content between compatible applications for seamless multitasking.
3.4. S Pen Compatibility
The Galaxy Z Fold 4 is compatible with the S Pen Fold Edition and S Pen Pro (sold separately). Use the S Pen for precise note-taking, drawing, and navigating the main display.
3.5. Camera Features
The device is equipped with a 50 MP rear camera capable of 4K video capture and High Dynamic Range (HDR) photography. A front camera is also integrated for selfies and video calls.

Image: The SAMSUNG Galaxy Z Fold 4 in its folded state, showing the rear panel with the triple camera array. This highlights the photographic capabilities of the device.
3.6. Connectivity
The Galaxy Z Fold 4 supports 5G, 4G LTE, Wi-Fi, and Bluetooth for high-speed data and wireless connections. It is unlocked for use with all major carriers.
4. Maintenance
4.1. Screen Care
The foldable screen is a delicate component. Avoid pressing hard on the screen with sharp objects. Keep the screen free from dust and debris. Clean the screen gently with a soft, lint-free cloth. Do not apply excessive pressure when cleaning.
4.2. Water Resistance
The device features a waterproof rating. However, this does not mean it is impervious to water damage under all conditions. Avoid submerging the device in water, especially saltwater, and ensure all ports are dry before charging.
4.3. Battery Optimization
To prolong battery life, avoid extreme temperatures. Use only Samsung-approved chargers and cables. Close unused applications and manage background processes to conserve power.
4.4. Software Updates
Regularly check for and install software updates to ensure your device has the latest features, security patches, and performance improvements.
5. Troubleshooting
5.1. Common Issues
- Device Not Powering On: Ensure the battery is charged. Connect to a charger and wait a few minutes before attempting to power on again.
- Screen Unresponsive: Restart the device. If the issue persists, perform a force restart (refer to Samsung support for specific key combinations).
- Connectivity Problems (Wi-Fi/Bluetooth): Toggle Wi-Fi or Bluetooth off and on. Restart the device. Ensure you are within range of the network or device.
- App Crashes: Clear the app's cache and data in the device settings, or uninstall and reinstall the application.
5.2. Seeking Further Assistance
If you encounter issues not covered in this manual or require advanced technical support, please visit the official Samsung support website or contact their customer service.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Samsung |
| Model Name | Galaxy Z Fold 4 |
| Operating System | Android 12L |
| RAM Memory | 12 GB |
| Storage Capacity | 256 GB |
| Screen Size (Main) | 7.6 Inches |
| Resolution (Main) | 1812 x 2176 |
| Refresh Rate | 120 hertz |
| CPU Speed | 3 GHz |
| Color | Phantom Black |
| SIM Card Slot Count | Dual SIM |
| Connector Type | USB Type C |
| Form Factor | Foldable Screen |
| Biometric Security | Fingerprint Recognition |
| Water Resistance Level | Waterproof |
| Rear Camera Resolution | 50 MP |
| Video Capture Resolution | 4k |
| Battery Capacity | 4400 Milliamp Hours |
| Phone Talk Time | 24 Hours |
| Wireless Provider | Unlocked for All Carriers |
| Connectivity Technology | 2G, 3G, 4G LTE, 5G |
7. Warranty and Support
As a renewed device, the SAMSUNG Galaxy Z Fold 4 SM-F936U1 typically includes a specific return policy and warranty from the seller.
- Return Policy: Renewed devices generally have a 30-day return period. Please refer to your purchase documentation for exact details.
- Additional Warranty: Any additional warranty beyond the return period will be specified on the product listing at the time of purchase.
- Manufacturer Support: For technical assistance, software updates, or service inquiries, please visit the official Samsung Support website.
- Seller Support: For issues related to the renewed condition or purchase, contact the seller directly.







