1. Introduction
This manual provides essential information for the safe and efficient use of your NUU A10L smartphone. Please read this guide thoroughly before operating your device to ensure optimal performance and longevity. The NUU A10L is an unlocked 4G LTE smartphone featuring a 5.5-inch display, 16GB internal storage, 2GB RAM, and a 2500 mAh battery, running on Android 12 Go Edition.

Image: Front and back view of the NUU A10L smartphone, showcasing its design and rear camera.
2. Safety Information
Observe the following precautions to prevent damage to your device or injury to yourself and others:
- Battery Safety: Do not attempt to replace the battery yourself. Use only NUU-approved chargers and cables. Do not expose the device to extreme temperatures or direct sunlight for extended periods.
- Water Resistance: This device is not water-resistant. Avoid exposure to liquids.
- Driving Safety: Do not use your phone while driving. Always prioritize road safety.
- Medical Devices: Maintain a safe distance between your phone and medical devices such as pacemakers. Consult your physician and medical device manufacturer for specific guidelines.
- Disposal: Dispose of the device and its battery responsibly according to local regulations. Do not dispose of in household waste.
3. Setup
3.1. Inserting SIM and MicroSD Cards
The NUU A10L supports dual SIM cards (Micro SIM1 and Nano SIM2) and a microSD card for expandable storage.
- Power off your device completely.
- Locate the SIM/microSD card tray on the side of the phone.
- Use the provided SIM ejector tool to open the tray.
- Carefully place your Micro SIM card into Slot 1 and your Nano SIM card into Slot 2, ensuring the gold contacts face downwards.
- If using a microSD card, insert it into the designated slot.
- Gently push the tray back into the phone until it clicks into place.

Image: Detailed view of the NUU A10L's card tray, showing slots for Micro SIM1, Nano SIM2, and a microSD card.
3.2. Charging the Battery
Before first use, fully charge the device battery.
- Connect the USB cable to the charging port on your phone.
- Connect the other end of the USB cable to the power adapter.
- Plug the power adapter into a wall outlet.
- The charging indicator will appear on the screen. A full charge typically takes approximately 2 hours.
3.3. Powering On and Initial Setup
- Press and hold the Power button until the NUU logo appears.
- Follow the on-screen prompts to complete the initial setup, including language selection, Wi-Fi connection, Google account setup, and security settings.
4. Operating Your Device
4.1. Basic Navigation
The NUU A10L uses a touchscreen interface. Common gestures include tapping, swiping, pinching, and long-pressing.
- Home Screen: Access your apps and widgets.
- Notification Panel: Swipe down from the top of the screen to view notifications and quick settings.
- App Drawer: Swipe up from the bottom of the screen to access all installed applications.
4.2. Making Calls and Sending Messages
- Calls: Tap the Phone icon, enter the number, and tap the call button.
- Messages: Tap the Messages icon, start a new conversation, enter the recipient and message, then send.
4.3. Connecting to Wi-Fi
- Go to Settings > Network & internet > Wi-Fi.
- Toggle Wi-Fi on.
- Select your desired network from the list and enter the password if prompted.
4.4. Camera Usage
The NUU A10L features a 5MP rear camera and a 2MP front camera.
- Tap the Camera icon to open the camera application.
- Frame your shot using the screen.
- Tap the Shutter button to take a photo.
- Switch between front and rear cameras using the camera switch icon.
5. Maintenance
5.1. Cleaning Your Device
Use a soft, lint-free cloth to clean the screen and body of your phone. Avoid using harsh chemicals or abrasive materials.
5.2. Battery Care
- Avoid fully discharging the battery frequently.
- Do not leave the phone charging for excessively long periods after it is fully charged.
- Store the device in a cool, dry place when not in use for extended periods.
5.3. Software Updates
Regularly check for and install software updates to ensure your device has the latest features and security patches. Go to Settings > System > System update.
6. Troubleshooting
If you encounter issues with your NUU A10L, try the following solutions:
- Device Not Powering On: Ensure the battery is charged. Connect the charger and wait a few minutes before attempting to power on again.
- Network Issues: Check if SIM cards are correctly inserted. Restart the device. Verify network settings in Settings > Network & internet > Mobile network.
- Apps Crashing/Freezing: Close and reopen the app. Clear the app's cache (Settings > Apps & notifications > [App Name] > Storage & cache > Clear cache). Restart the phone.
- Slow Performance: Close unused apps. Clear unnecessary files and cache. Consider a factory reset as a last resort (Settings > System > Reset options > Erase all data (factory reset) - Note: This will delete all data on your phone. Back up important information first.).
7. Specifications
Key technical specifications for the NUU A10L (Model: N5502L):

Image: Graphic illustrating the NUU A10L's 5.45-inch FWVGA+ display with 960x480 resolution.
| Feature | Detail |
|---|---|
| Model Number | N5502L |
| Operating System | Android 12 Go Edition |
| Display | 5.45 Inches FWVGA+ (480 x 800 resolution) |
| Processor | 1.3GHz Quad-Core (MT6739) |
| RAM | 2 GB |
| Internal Storage | 16 GB |
| Expandable Storage | microSD (up to 64GB) |
| Battery Capacity | 2500 mAh Lithium Ion |
| Rear Camera | 5 MP with LED Flash |
| Front Camera | 2 MP |
| Dimensions | 5.94 x 2.81 x 0.39 inches (150 x 71.3 x 10 mm) |
| Weight | 5.3 ounces (150 Grams) |
| Connectivity | Wi-Fi, Bluetooth 4.2, GPS, Cellular (GSM, LTE) |
| SIM Type | Dual SIM (Micro SIM1, Nano SIM2) |
| Wireless Carrier Compatibility | Unlocked for All Carriers (T-Mobile, AT&T compatible) |

Image: Visual representation of NUU A10L's core specifications: up to 64GB microSD support, Quad-Core processor, 2GB RAM, and 16GB internal storage.
8. Warranty and Support
Your NUU A10L smartphone comes with a limited manufacturer's warranty. For detailed warranty terms and conditions, please refer to the warranty card included in your product packaging or visit the official NUU Mobile website. For technical support, troubleshooting assistance, or service inquiries, please contact NUU Mobile customer service through their official channels.
Online Resources: For additional support and FAQs, visit the NUU Mobile Store.





