1. Introduction
This manual provides essential information for setting up, operating, and maintaining your Xiaomi Redmi A3 smartphone. Please read this manual thoroughly to ensure proper usage and to maximize your device's capabilities.
The Xiaomi Redmi A3 features a modern design with a distinctive circular camera module and a matte leather-like texture. It is equipped with a 6.71-inch HD+ display offering a 90Hz refresh rate for smooth visuals.

Image: Front and back view of the Xiaomi Redmi A3 smartphone, showcasing its design and camera module.
2. What's in the Box
Upon unboxing your Xiaomi Redmi A3, verify that all the following items are included:
- Mobile Phone
- Adapter
- USB Type-C Cable
- SIM Eject Tool
- Quick Start Guide and Warranty Card
- Safety Information
3. Setup
3.1 Inserting the SIM Card and MicroSD Card
- Locate the SIM card tray on the side of your device.
- Insert the SIM eject tool into the small hole on the tray to open it.
- Place your Nano-SIM card(s) and/or microSD card into the designated slots on the tray. Ensure the cards are correctly oriented. The Redmi A3 supports Dual SIM and a separate microSD card.
- Carefully push the tray back into the phone until it is flush with the side.
3.2 Powering On/Off
- To Power On: Press and hold the Power button (located on the side) until the Xiaomi logo appears.
- To Power Off: Press and hold the Power button, then select "Power off" from the options that appear on the screen.
3.3 Initial Configuration
Follow the on-screen prompts to complete the initial setup process. This includes selecting your language, connecting to a Wi-Fi network, setting up your Google account, and configuring security features like fingerprint unlock or face unlock.
4. Operating the Device
4.1 Android 14 Operating System
Your Redmi A3 runs on Android 14, offering a user-friendly interface and access to a wide range of applications through the Google Play Store. The device is designed to receive 2 major Android updates and 3 years of security patch updates.
4.2 Basic Navigation
- Home Screen: Swipe left or right to navigate between home screens.
- App Drawer: Swipe up from the bottom of the screen to access all installed applications.
- Notifications and Quick Settings: Swipe down from the top of the screen to view notifications and access quick settings toggles.
- Recent Apps: Swipe up and hold from the bottom of the screen (or tap the recent apps button, if configured) to view and switch between recently used applications.
5. Camera Features
The Redmi A3 is equipped with a dual rear camera system and a front camera for photography and video recording.

Image: Side view of the Xiaomi Redmi A3, showing the camera module's protrusion and the phone's slim profile.
5.1 Rear Camera
- Main Camera: 8MP with a 4P lens and f/2.0 aperture.
- Auxiliary Lens: A QVGA lens with an active pixel array of 248 x 328.
- Modes: filmCamera, HDR mode, Portrait mode, Time-lapse.
- Video Recording: Supports 1080P at 30fps and 720P at 30fps.
5.2 Front Camera
- Resolution: 5MP with f/2.2 aperture.
- Modes: filmCamera, HDR mode, Soft-light ring, Portrait mode, Time-lapse.
- Video Recording: Supports 1080P at 30fps and 720P at 30fps.
6. Connectivity
The Redmi A3 offers various connectivity options for communication and data transfer.
- Network Bands: Supports 4G (LTE TDD: 38/40/41; LTE FDD: 1/3/5/7/8/20/28), 3G (WCDMA: 1/5/8), and 2G (GSM: 2/3/5/8).
- Wireless Networks: 2.4GHz/5GHz Wi-Fi, Bluetooth 5.4.
- Navigation: GPS, Glonass, Galileo, Beidou.
- Audio: 3.5mm headphone jack, supports FM radio (with headphone jack).
- Charging/Data: USB Type-C port.
7. Display Features
Experience clear visuals on the Redmi A3's large display.
- Size: 6.71-inch Dot Drop display.
- Resolution: 1650x720 pixels, 268 ppi.
- Refresh Rate: Up to 90Hz (can be adjusted for supported apps).
- Brightness: 500 nits.
- Contrast Ratio: 1500:1.
- Color Depth: 8-bit.
- Eye Protection: Features DC dimming and supports Night Light mode.
8. Battery and Charging
The Redmi A3 is equipped with a high-capacity battery to support extended usage.
- Battery Capacity: 5000mAh (typical).
- Charging: Supports 10W charging.
- Charging Port: USB Type-C.
9. Security Features
Protect your device and data with the integrated security features.
- Side Fingerprint Sensor: Unlock your phone quickly and securely using your fingerprint.
- AI Face Unlock: Use facial recognition to unlock your device.
10. Maintenance
Proper maintenance ensures the longevity and optimal performance of your Redmi A3.
- Cleaning: Use a soft, lint-free cloth to clean the screen and body of the phone. Avoid abrasive materials or harsh chemicals.
- Software Updates: Regularly check for and install system updates to ensure your device has the latest features, security patches, and performance improvements.
- Storage Management: Periodically clear unnecessary files and applications to free up storage space and maintain device speed.
- Environmental Conditions: Avoid exposing the phone to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
11. Troubleshooting
This section addresses common issues you might encounter with your Redmi A3.
11.1 Device Not Powering On
- Ensure the battery is charged. Connect the phone to its charger and wait a few minutes before attempting to power it on.
- Press and hold the Power button for at least 10-15 seconds to force a restart.
11.2 Network Connectivity Issues
- Check if your SIM card is properly inserted and activated.
- Verify that mobile data is enabled in your phone's settings.
- Restart your device.
- Go to Settings > SIM cards & mobile networks and ensure your preferred network type is selected.
- If issues persist, contact your network provider.
11.3 Slow Performance
- Close unused applications running in the background.
- Clear cache data for frequently used apps.
- Ensure your device has sufficient free storage space.
- Restart your phone regularly.
- As a last resort, consider a factory data reset (back up your data first).
12. Specifications
Detailed technical specifications for the Xiaomi Redmi A3.

Image: Certification screen of the Redmi A3, displaying model and regulatory information.
| Feature | Specification |
|---|---|
| Model Name | Redmi A3 |
| Item Model Number | S9909542 |
| Operating System | Android 14 |
| Display Size | 6.71 Inches |
| Display Resolution | 1650 x 720 |
| Refresh Rate | 90 Hz |
| RAM | 4 GB |
| Memory Storage Capacity | 4 GB (Note: This refers to RAM, internal storage is 128GB as per product title) |
| Battery Capacity | 5000 Milliamp Hours |
| Main Camera | 8 MP |
| Front Camera | 5 MP |
| Connectivity | 4G, 3G, 2G, Wi-Fi, Bluetooth 5.4, USB Type-C |
| Audio Jack | 3.5 mm |
| Security | Side Fingerprint Sensor, AI Face Unlock |
| Dimensions | 7.09 x 3.15 x 1.57 inches |
| Item Weight | 7.1 ounces (200 Grams) |
13. Warranty and Support
Your Xiaomi Redmi A3 comes with a warranty. Please refer to the 'Quick Start Guide and Warranty Card' included in your product box for detailed warranty terms and conditions.
For technical support or service inquiries, please visit the official Xiaomi support website or contact their customer service. Keep your purchase receipt and product information handy when seeking support.
The device is committed to receiving 2 major Android operating system updates and 3 years of security patch updates from its release date, ensuring your device remains secure and up-to-date.





