1. Introduction
This manual provides essential information for setting up, operating, and maintaining your realme C21Y smartphone. Please read this guide thoroughly to ensure optimal performance and longevity of your device. The realme C21Y is an international model featuring a 6.5-inch HD+ display, dual SIM capabilities, and a long-lasting battery.
Figure 1: Rear view of the realme C21Y smartphone.
2. Setup
2.1 What's in the Box
- realme C21Y Smartphone
- Adapter
- USB Cable
2.2 SIM Card Installation
The realme C21Y supports dual SIM cards. Locate the SIM card tray on the side of the device. Use the provided SIM ejector tool to open the tray. Insert your Nano-SIM cards and a microSD card (if desired) into the designated slots, ensuring proper orientation. Gently push the tray back into the phone until it clicks into place.
Figure 2: SIM and microSD card tray for realme C21Y.
2.3 Powering On/Off
- To Power On: Press and hold the Power button (located on the right side) until the realme logo appears.
- To Power Off: Press and hold the Power button, then select 'Power off' from the options on the screen.
- To Restart: Press and hold the Power button, then select 'Restart' from the options.
2.4 Initial Setup
Upon first power-on, the device will guide you through 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.
3. Operating Your Device
3.1 Display and Navigation
The realme C21Y features a 6.5-inch HD+ LCD touchscreen with a resolution of 1600 x 720 pixels. Navigate the device using touch gestures: tap to select, swipe to scroll, pinch to zoom, and long-press for additional options.
Figure 3: Front view of the realme C21Y display.
3.2 Camera Functions
The device is equipped with a 13MP AI Triple Camera system on the rear and a front camera for selfies and video calls. The rear camera setup includes a 13MP primary camera, a 2MP B&W lens, and a 2MP macro lens. Key features include Super NightScape for enhanced low-light photography, Chroma Boost for vibrant colors, and 1080P video recording.
Figure 4: Details of the realme C21Y's 13MP AI Triple Camera.
3.3 Battery Management
The realme C21Y is powered by a 5000mAh battery, providing extended usage time. To optimize battery life, manage background app usage, adjust screen brightness, and enable power-saving modes when needed. Use the provided adapter and USB cable for charging.
Figure 5: The 5000mAh massive battery of the realme C21Y.
3.4 Connectivity
The device supports Bluetooth and Cellular wireless communication technologies. For audio, please note that there is no dedicated headphone jack, requiring the use of wireless headphones or a USB-C to 3.5mm adapter (not included).
4. Maintenance
4.1 Cleaning Your Device
To clean your realme C21Y, power it off and gently wipe the screen and back panel with a soft, lint-free cloth. Avoid using harsh chemicals or abrasive materials that could damage the screen or finish. Do not expose the device to excessive moisture.
4.2 Software Updates
Regularly check for and install software updates to ensure your device has the latest security patches, features, and performance improvements. You can usually find update options in the device's 'Settings' menu under 'System' or 'About phone'.
5. Troubleshooting
If you encounter issues with your realme C21Y, try the following basic troubleshooting steps:
- Device not responding: Press and hold the Power button for about 10-15 seconds to force a restart.
- Battery draining quickly: Check background app usage, reduce screen brightness, and ensure all apps are updated.
- Network connectivity issues: Toggle Airplane Mode on and off, restart the device, or check your SIM card installation.
- Apps crashing: Clear the cache and data for the problematic app in 'Settings' > 'Apps', or reinstall the app.
For more complex issues, refer to the official realme support website or contact customer service.
6. Specifications
| Feature | Specification |
|---|---|
| Model Name | C21Y |
| Operating System | Android |
| RAM | 4 GB |
| Memory Storage Capacity | 64 GB |
| Screen Size | 6.5 Inches |
| Resolution | 1600 x 720 |
| Battery Capacity | 5000 Milliamp Hours |
| CPU Speed | 1.8 GHz |
| Item Weight | 14 ounces |
| Product Dimensions | 6 x 4 x 2 inches |
| Wireless Communication | Bluetooth, Cellular |
| Audio Jack | No headphone jack |
7. Warranty and Support
For detailed warranty information, please refer to the warranty card included with your product or visit the official realme website. Keep your proof of purchase for warranty claims.
If you require technical assistance or have questions not covered in this manual, please contact realme customer support through their official channels.
