1. Introduction
This manual provides detailed instructions for the safe and efficient operation of your HMD XR21 5G smartphone. Please read this manual thoroughly before using your device to ensure proper functionality and to understand its features.
The HMD XR21 5G is designed as a rugged smartphone, built to withstand challenging environments while offering modern smartphone capabilities. It features Android 12, 5G connectivity, a 6.49-inch screen, and a 64MP dual camera system.
2. Package Contents
Verify that your product package contains the following items:
- HMD XR21 5G Smartphone
- USB Cable
- Power Adapter
- SIM Tray Ejector
- Quick Start Guide (not included in this digital manual)
If any items are missing or damaged, please contact your retailer or HMD support.
3. Device Overview
Familiarize yourself with the physical components of your HMD XR21 5G smartphone.

Image 3.1: Front and back view of the HMD XR21 5G smartphone. The back shows the dual camera module and HMD branding. The front displays the screen.
3.1. Physical Buttons and Ports
- Power/Lock Button: Located on the side, used to power on/off the device or lock/unlock the screen.
- Volume Buttons: Adjust media volume and call volume.
- USB-C Port: For charging and data transfer.
- 3.5 mm Audio Jack: For connecting headphones.
- SIM/Memory Card Tray: Houses the SIM card(s).

Image 3.2: Side view of the HMD XR21 5G smartphone, highlighting the power button and volume controls.
3.2. Camera System
The HMD XR21 5G features a 64MP AI dual camera system on the rear and a front-facing camera.

Image 3.3: Close-up of the rear camera module on the HMD XR21 5G, showing the dual lenses and flash.
4. Setup
4.1. Inserting the SIM Card
- Locate the SIM tray on the side of your device.
- Insert the SIM tray ejector tool into the small hole next to the tray.
- Gently push until the tray pops out.
- Place your Nano-SIM card(s) into the tray with the gold contacts facing down. Ensure proper orientation.
- Carefully push the tray back into the slot until it clicks into place.
The HMD XR21 5G supports Dual SIM functionality. Ensure your SIM cards are correctly inserted for network detection.
4.2. Initial Power On and Setup
- Press and hold the Power/Lock button until the HMD logo appears.
- Follow the on-screen prompts to select your language, connect to Wi-Fi, and set up your Google account.
- You will be guided through setting up security features like PIN, pattern, or fingerprint.
4.3. Network Compatibility
This device is designed to work with GSM carriers, including AT&T, Boost, Cricket, H2O Wireless, Metro, Net10, Simple Mobile, T-Mobile, and Tracfone. It is not compatible with Verizon. 5G network support may vary by carrier.

Image 4.1: Visual representation of major U.S. carriers compatible with the HMD XR21 5G smartphone.
5. Operating Your Device
5.1. Basic Navigation
- Home Screen: Swipe left or right to access different panels.
- App Drawer: Swipe up from the bottom of the screen to view all installed applications.
- Notifications Panel: Swipe down from the top of the screen to view notifications and quick settings.
5.2. 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 your message.
5.3. Camera Usage
To open the camera, tap the Camera icon on your home screen or app drawer. You can switch between photo and video modes, adjust settings, and use the front or rear cameras.

Image 5.1: The HMD XR21 5G smartphone highlighting its 64MP AI dual camera capabilities.
5.4. Battery Management
The HMD XR21 5G is equipped with a 4800 mAh battery, providing up to 2 days of battery life under typical usage. It supports 33W Quick Charge 3. To optimize battery life:
- Reduce screen brightness.
- Turn off Wi-Fi, Bluetooth, and GPS when not in use.
- Close unused applications running in the background.
- Enable battery saver mode.

Image 5.2: The HMD XR21 5G smartphone with an icon indicating up to 2 days of battery life.
6. Maintenance
The HMD XR21 5G is built for durability. It is MIL-STD-810H and IP69K certified, making it dust-proof, waterproof, and drop-proof up to 1.8 meters. The screen and camera lenses are protected by Corning Gorilla Glass Victus.
6.1. Cleaning Your Device
- Use a soft, lint-free cloth to clean the screen and body.
- For stubborn marks, slightly dampen the cloth with water. Avoid harsh chemicals.
- Ensure all ports are dry before charging or connecting accessories.
6.2. Water and Dust Resistance
While the device is highly resistant to water and dust, it is not impervious. Avoid intentional submersion or exposure to high-pressure water jets. If the device gets wet, dry it thoroughly before use or charging.
7. Troubleshooting
This section addresses common issues you might encounter with your HMD XR21 5G.
7.1. Device Not Turning On
- Ensure the battery is charged. Connect the device to the power adapter and wait a few minutes before attempting to power on.
- Press and hold the Power/Lock button for at least 10-15 seconds to perform a forced restart.
7.2. Network Connectivity Issues
- Check if your SIM card is correctly inserted.
- Verify that Airplane mode is not enabled.
- Restart your device.
- Contact your network carrier to confirm service availability in your area.
7.3. Applications Crashing or Freezing
- Close and reopen the application.
- Clear the app's cache and data from Settings > Apps.
- Ensure the application is updated to the latest version.
- If the issue persists, consider uninstalling and reinstalling the app.
7.4. Factory Reset
If your device experiences persistent software issues, a factory reset may resolve them. Warning: A factory reset will erase all data from your device. Back up important data before proceeding.
- Go to Settings > System > Reset options.
- Select "Erase all data (factory reset)".
- Confirm your decision and enter your PIN/pattern if prompted.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | TA-1592 |
| Operating System | Android 12.0 |
| Screen Size | 6.49 Inches |
| Resolution | 2400 x 1080 |
| Refresh Rate | 120 Hz |
| RAM Memory | 6 GB |
| Internal Storage | 128 GB |
| Battery Capacity | 4800 mAh |
| Charging Time | 3 Hours |
| Rear Camera | 64MP Dual Camera |
| Connectivity | 5G, Bluetooth, NFC, USB, Wi-Fi |
| Special Features | Built-In GPS, Dual SIM, Fast Charging Support, Rugged Body, Water Resistant |
| Dimensions | 6.61 x 3.09 x 0.41 inches |
| Item Weight | 8.2 ounces |
| Manufacturer | HMD Global Oy |
9. Warranty and Support
For warranty information and customer support, please refer to the warranty card included with your product or visit the official HMD website. Security updates for the HMD XR21 are provided until August 2027.
For further assistance, you may contact HMD customer service through their official channels.





