1. Introduction
The Oukitel WP21 is a robust 4G rugged smartphone designed for durability and high performance in challenging environments. Featuring a powerful MTK Helio G99 Octa-Core processor, a large 6.78-inch FHD+ display with a 120Hz refresh rate, and an impressive 9800mAh battery with 66W fast charging, it is built to withstand extreme conditions while providing a smooth user experience. Its advanced camera system includes a 64MP main camera and a 20MP night vision camera, complemented by IP68, IP69K, and MIL-STD-810H certifications for water, dust, and drop resistance.
Figure 1: Oukitel WP21 Rugged Phone with key specifications.
2. Package Contents
Please check the box for the following items:
- 1x Oukitel WP21 Phone
- 1x Type-C Cable
- 1x Power Adapter (66W)
- 1x Warranty Card
- 1x Quick Start Guide
Figure 2: Oukitel WP21 package contents.
3. Device Layout
Familiarize yourself with the physical components of your Oukitel WP21 phone.
Figure 3: Front and rear view of the Oukitel WP21.
The rear of the device features a unique dual-screen design, displaying time, notifications, and other information. The main camera module is also located on the rear.
Figure 4: Rear dual screen functionality.
4. Setup
4.1. SIM/TF Card Installation
- Locate the SIM card tray on the side of the phone.
- Use the provided SIM ejector tool to open the tray.
- Carefully place your 4G SIM card(s) and/or TF (microSD) card into the designated slots. The WP21 supports a 3-choose-2 SIM slot configuration (either two SIMs or one SIM and one TF card).
- Gently push the tray back into the phone until it is flush with the device body.
Figure 5: SIM/TF Card slot and installation.
4.2. Initial Charging
Before first use, it is recommended to fully charge your Oukitel WP21. Use the provided 66W power adapter and Type-C cable for optimal fast charging.
- Connect the Type-C cable to the charging port at the bottom of the phone.
- Connect the other end of the cable to the 66W power adapter.
- Plug the power adapter into a wall outlet.
- The charging indicator will appear on the screen. Allow the phone to charge completely.
Figure 6: 66W Ultra Fast Charging.
4.3. Power On/Off
- **To Power On:** Press and hold the Power button (usually on the right side) until the Oukitel logo appears.
- **To Power Off:** Press and hold the Power button, then select 'Power off' from the options on the screen.
4.4. Initial Setup Wizard
Upon first power-on, the Android 12 setup wizard will guide you through essential configurations:
- Select your language and region.
- Connect to a Wi-Fi network.
- Accept terms and conditions.
- Sign in to your Google account or create a new one.
- Set up screen lock (PIN, pattern, password, fingerprint, Face ID).
- Review and adjust other settings as prompted.
5. Operating Instructions
5.1. Display and Interaction
The Oukitel WP21 features a 6.78-inch FHD+ display with a 120Hz refresh rate for smooth visuals and responsiveness. The rear dual screen provides quick access to information without needing to flip the phone.
- **Main Display:** Navigate Android 12 using touch gestures.
- **Rear Dual Screen:** This always-on display can show time, date, battery level, and notifications. Customize its appearance and functions in the phone's settings.
Figure 7: 120Hz refresh rate display.
5.2. Camera Functions
The WP21 is equipped with a versatile camera system:
- **Rear Cameras:**
- 64MP SONY IMX686 Main Camera (f/1.9)
- 2MP GC02M2 Macro Camera (f/2.4)
- 20MP SONY IMX350 Night Vision Camera (f/2.0)
- **Front Camera:** 16MP Camera
Open the Camera app to switch between modes (Photo, Video, Night Vision, Macro, Portrait, etc.). The 20MP Night Vision camera allows for clear photos in low-light or complete darkness.
Figure 8: Rear camera specifications.
Figure 9: Night Vision camera in action.
5.3. Connectivity
- **4G Network:** Supports 2G, 3G, and 4G networks across various bands (GSM, WCDMA, TDD, FDD). Ensure your SIM card is properly inserted and activated.
- **Wi-Fi:** Connect to available Wi-Fi networks via Settings > Network & internet > Wi-Fi.
- **Bluetooth 5.0:** Pair with Bluetooth devices (headphones, speakers, etc.) via Settings > Connected devices > Bluetooth.
- **NFC:** Use NFC for contactless payments (Google Pay) and quick pairing with compatible devices.
- **GPS:** The phone supports GPS, Glonass, Beidou, and Galileo for accurate global navigation.
Figure 10: Key connectivity and security features.
5.4. Security Features
- **Face ID:** Set up facial recognition for convenient unlocking.
- **Fingerprint Sensor:** Use the side-mounted fingerprint sensor for secure and quick access.
5.5. Ruggedness Features
The Oukitel WP21 is built to endure harsh conditions:
- **IP68 Waterproof:** Can withstand immersion in water up to 1.5 meters deep for 30 minutes. Ensure all ports are securely sealed before exposure to water.
- **IP69K Dustproof:** Fully sealed body protects against dust, dirt, and fine particles.
- **MIL-STD-810H Drop-proof:** Designed to survive drops from up to 1.5 meters.
Figure 11: Ruggedness certifications.
6. Maintenance
6.1. Cleaning Your Device
To maintain the rugged integrity and appearance of your WP21:
- Wipe the phone with a soft, damp cloth. For stubborn dirt, use a mild soap solution and rinse thoroughly with clean water.
- Ensure all port covers are closed before cleaning with liquids.
- Do not use harsh chemicals, abrasive cleaners, or compressed air.
- Dry the phone completely before charging or opening any ports.
6.2. Battery Care
The 9800mAh battery provides extended usage. To prolong battery life:
- Use only the original Oukitel 66W charger and cable.
- Avoid extreme temperatures (very hot or very cold) as they can degrade battery performance.
- Do not let the battery completely drain frequently.
- For long-term storage, charge the battery to around 50% and power off the device.
Figure 12: Extended battery performance.
6.3. Software Updates
Regularly check for and install system updates to ensure optimal performance, security, and access to new features. Go to Settings > System > System update.
6.4. Storage Management
The WP21 comes with 12GB RAM and 256GB ROM. You can expand storage using a TF card (up to 512GB, occupying one SIM slot). Regularly clear unnecessary files and apps to maintain performance.
Figure 13: RAM and storage capabilities.
7. Troubleshooting
If you encounter issues with your Oukitel WP21, try the following solutions:
| Problem | Possible Solution |
|---|---|
| Phone does not power on | Ensure the battery is charged. Connect to the charger for at least 10 minutes, then try powering on. If unresponsive, perform a forced restart by holding the Power button for 10-15 seconds. |
| Cannot connect to Wi-Fi/Mobile Data | Check if Wi-Fi/Mobile Data is enabled in settings. Restart the phone. For Wi-Fi, try forgetting the network and reconnecting. For mobile data, ensure SIM card is correctly inserted and has an active plan. |
| Camera not working | Restart the phone. Clear the cache and data of the Camera app (Settings > Apps > Camera > Storage > Clear cache/data). Ensure no other app is using the camera. |
| Phone is slow/unresponsive | Close background apps. Clear cache. Restart the phone. Check for system updates. If issues persist, consider a factory reset (backup data first). |
| Dual screen not displaying | Check dual screen settings in the phone's display options. Ensure the feature is enabled and configured correctly. Restart the device. |
If these steps do not resolve the issue, please contact Oukitel customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Brand Name | UNIWA (Oukitel) |
| Model | WP21 |
| Operation System | Android 12 |
| CPU Model | MTK Helio G99 (6nm) |
| RAM | 12GB |
| ROM | 256GB |
| Display Size | 6.78 inches FHD+ |
| Display Resolution | 2460x1080 |
| Refresh Rate | 120Hz |
| Touch Screen | Yes |
| Rear Camera Pixel | 64MP (Main), 20MP (Night Vision), 2MP (Macro) |
| Front Camera Pixel | 16MP |
| Battery Capacity | 9800mAh |
| Fast Charging | 66W Supercharge |
| Charging Interface Type | Type-C |
| SIM Card Quantity | 2 SIM Card (3-choose-2 slot) |
| Cellular | 2G, 3G, 4G |
| Network Bands | GSM: B2/B3/B5/B8; WCDMA: B1/B2/B4/B5/B8; TDD: B38/B40/B41; FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28(A+B)/B66 |
| Bluetooth Version | 5.0 |
| NFC | Yes |
| Built-in GPS | Yes (GPS+Glonass+Beidou+Galileo) |
| Biometrics Technology | Face Recognition, Fingerprint Sensor |
| Water/Dust/Drop Resistance | IP68, IP69K, MIL-STD-810H |
| Dimensions (H x W x T) | 177.3mm x 84.3mm x 18.4mm |
| Weight | 398g |
| Certification | GMS, FCC, CE, MIC, IC |
Figure 14: Oukitel WP21 feature highlights.
9. User Tips
- **Optimize Battery Life:** While the 9800mAh battery is massive, you can extend its life further by adjusting screen brightness, limiting background app activity, and using power-saving modes when not needing full performance.
- **Maximize Storage:** Utilize the expandable storage option with a TF card for media and large files, keeping the internal 256GB ROM free for apps and system data.
- **Ruggedness Best Practices:** Although highly durable, always ensure all port covers are firmly sealed before exposing the phone to water or dusty environments to prevent damage.
- **Dual Screen Customization:** Explore the settings for the rear dual screen to personalize its display with different watch faces and quick access widgets that suit your needs.
- **Night Vision Camera:** Experiment with the 20MP Night Vision camera in completely dark environments to capture unique photos and videos that regular cameras cannot.
10. Warranty and Support
Your Oukitel WP21 device comes with a standard manufacturer's warranty. Please refer to the included Warranty Card for specific terms, conditions, and duration of coverage.
For technical support, service, or warranty claims, please contact your point of purchase or visit the official Oukitel support website. Keep your proof of purchase handy when contacting support.
Certifications: The Oukitel WP21 is certified with IP68, IP69K, MIL-STD-810H, GMS, FCC, CE, MIC, and IC, ensuring compliance with international standards for ruggedness, safety, and performance.
