Introduction
This manual provides comprehensive instructions for the safe and efficient use of your OnePlus 6 A6003 smartphone. Please read this manual thoroughly before using your device to ensure optimal performance and to prevent damage.
The OnePlus 6 A6003 is a high-performance 4G smartphone designed for seamless multitasking, gaming, and communication. It features a 6.28-inch Optic AMOLED display, a powerful Qualcomm SDM845 Snapdragon 845 processor, and a dual-camera system.
Safety Information
Always follow basic safety precautions when using your smartphone to reduce the risk of fire, electric shock, and injury to persons. Keep the device away from water and excessive heat. Do not attempt to disassemble or repair the device yourself.
Battery Safety: The device contains a non-removable Lithium Ion battery. Do not expose the battery to high temperatures or direct sunlight. Do not puncture, open, or short-circuit the battery.
Network Compatibility: This smartphone is compatible with GSM networks such as AT&T and T-Mobile. It is not compatible with CDMA networks such as Verizon or Sprint. Verify exact 2G GSM, 3G, and 4G/LTE compatibility with your network provider prior to purchase.
Getting Started
Package Contents
Ensure all items are present in the box:
- OnePlus 6 A6003 Smartphone
- USB Type-C Cable
- Power Adapter
- SIM Tray Ejector
- Quick Start Guide
- Safety Information Booklet
Device Layout
Familiarize yourself with the physical components of your OnePlus 6 A6003.

Figure 1: Front view of the OnePlus 6 A6003 smartphone, showcasing its full-screen display with a notch at the top and slim bezels. The screen displays a vibrant wallpaper with the text "NEVER SETTLE".

Figure 2: Rear view of the OnePlus 6 A6003 smartphone in Mirror Black. This image highlights the vertically aligned dual camera module, the circular fingerprint sensor positioned below it, and the distinct OnePlus logo. The subtle "Designed by OnePlus" text is visible at the bottom.

Figure 3: A dynamic view of two OnePlus 6 A6003 smartphones. One device is presented from the front, displaying its vibrant screen with the "NEVER SETTLE" wallpaper. The second device is positioned behind it, showcasing its sleek, reflective Mirror Black rear panel and the dual camera system.
Inserting SIM Cards
- Locate the SIM card tray on the side of the device.
- Insert the provided SIM tray ejector tool into the small hole next to the tray and push gently until the tray pops out.
- Place your Nano-SIM cards into the designated slots on the tray. Ensure the gold contacts are facing down and the card is correctly oriented.
- Carefully reinsert the SIM tray into the device until it clicks securely into place.
Charging the Battery
Before initial use, it is recommended to fully charge the device battery. Always use only the provided USB Type-C cable and power adapter to ensure optimal charging speed and safety.
- Connect the USB Type-C cable to the charging port located at the bottom of the phone.
- Connect the other end of the USB Type-C cable to the power adapter.
- Plug the power adapter into a standard wall outlet.
- The charging indicator will appear on the screen, showing the battery's charging status.
Operating Your Device
Power On/Off and Restart
- To Power On: Press and hold the Power button (located on the right side of the device) until the OnePlus logo appears on the screen.
- To Power Off: Press and hold the Power button until the power options menu appears on the screen, then select 'Power off'.
- To Restart: Press and hold the Power button until the power options menu appears, then select 'Restart'.
Initial Setup
Upon first power-on, your device will guide you through a series of initial setup steps. This process typically includes:
- Selecting your preferred language.
- Connecting to a Wi-Fi network.
- Setting up or logging into your Google account.
- Configuring security features such as fingerprint unlock, face unlock, and screen lock methods (PIN, pattern, password).
Navigation
The OnePlus 6 A6003 operates on Android 8.1 (Oreo) with OnePlus's custom OxygenOS. You can navigate the interface using either on-screen gestures or traditional navigation buttons, depending on your preference set in system settings.
- Home: Swipe up from the bottom of the screen (or tap the home button icon if enabled).
- Back: Swipe in from the left or right edge of the screen (or tap the back button icon if enabled).
- Recent Apps: Swipe up from the bottom and hold (or tap the recent apps button icon if enabled) to view and switch between recently used applications.
Camera Usage
The OnePlus 6 features a versatile dual primary camera system (16MP + 20MP) and a 16MP secondary (front) camera, offering various photography and videography options.
- Open the Camera application from your home screen or app drawer.
- Select your desired shooting mode by swiping left or right on the screen (e.g., Photo, Portrait, Video, Pro Mode, Slow Motion, Time-Lapse).
- Tap the circular shutter button to capture a photo or to start/stop video recording.
- Adjust various settings such as HDR, flash, aspect ratio, and filters directly from the camera interface to enhance your shots.
Maintenance
Software Updates
It is crucial to regularly check for and install software updates to ensure your device benefits from the latest features, security patches, and performance optimizations. To check for updates, navigate to Settings > System > System updates and follow the on-screen prompts.
Cleaning Your Device
To maintain the appearance and functionality of your phone, use a soft, lint-free cloth to gently clean the screen and the body. Avoid using harsh chemicals, abrasive materials, or excessive moisture. For stubborn smudges, a slightly dampened cloth with water can be used, ensuring no liquid enters openings.
Storage Management
Your device is equipped with 128GB of internal storage. To optimize performance and prevent slowdowns, regularly manage your storage by:
- Clearing cached data for applications (navigate to Settings > Apps & notifications > App info > [Select App Name] > Storage & cache > Clear cache).
- Uninstalling applications that are no longer used.
- Transferring large files, such as photos and videos, to cloud storage services or a computer to free up internal space.
Troubleshooting
This section addresses common issues you might encounter with your OnePlus 6 A6003 and provides potential solutions.
| Problem | Possible Solution |
|---|---|
| Device not turning on | Ensure the battery is sufficiently charged. Connect the device to its charger for at least 15 minutes before attempting to power it on. If it remains unresponsive, perform a force restart by holding the Power button for 10-15 seconds. |
| Applications crashing or freezing | Clear the cache of the problematic application (navigate to Settings > Apps & notifications > App info > [Select App Name] > Storage & cache > Clear cache). If the issue persists, try uninstalling and then reinstalling the app. Ensure your device's operating system is updated to the latest version. |
| Poor battery life | To conserve battery, reduce screen brightness, disable unused features such as Wi-Fi, Bluetooth, and GPS when not actively in use. Close applications running in the background. Review battery usage statistics in Settings > Battery to identify and manage power-hungry applications. |
| Network connectivity issues (calls, data) | Verify that the SIM card is correctly inserted into the tray. Restart your device. Navigate to Settings > Network & internet > Mobile network and confirm that mobile data is enabled. If problems persist, consider resetting network settings (Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth). |
Specifications
Detailed technical specifications for the OnePlus 6 A6003 smartphone:
- Model: A6003 (Item model number: 6921815605577)
- Display: 6.28 inches Optic AMOLED capacitive touchscreen, 1080 x 2280 pixels resolution, Corning Gorilla Glass 5 protection
- Processor: Qualcomm SDM845 Snapdragon 845, Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
- RAM: 8 GB
- Internal Storage: 128 GB (No memory card slot for expansion)
- Operating System: Android 8.1 (Oreo)
- Primary Camera: Dual: 16MP (f/1.7, 27mm, 1/2.6", 1.22µm, gyro-EIS, OIS) + 20MP (f/1.7, 1/2.8", 1.0µm), phase detection autofocus, dual-LED flash. Video: 2160p@30/60fps, 1080p@30/60/240fps, 720p@480fps.
- Secondary Camera: 16MP (f/2.0, 20mm, 1/3", 1.0µm), gyro-EIS, Auto HDR. Video: 1080p.
- Battery: 1 Lithium Ion battery (included), 3300 mAh
- Dimensions: 6.13 x 2.97 x 0.31 inches (155.7 x 75.4 x 7.8 mm)
- Weight: 6.2 ounces (177 Grams)
- Connectivity: Wi-Fi, Bluetooth, GPS, NFC, USB Type-C, 3.5mm headphone jack. Cellular (GSM only, 4G LTE support).
- Special Features: Dual SIM, Fingerprint sensor (rear-mounted), Face Unlock, Alert Slider.
Warranty and Support
Please note that this OnePlus 6 A6003 is an International Version and is explicitly stated to come with No Warranty. For technical support or further assistance, it is recommended to refer to the official OnePlus support channels available through their global website or contact your original retailer for any available post-purchase support.
For more information regarding OnePlus products and services, you may visit the OnePlus Store on Amazon.





