1. Introduction
This manual provides essential information for setting up, operating, and maintaining your vivo Y31 5G smartphone. Please read it carefully to ensure proper usage and to maximize the device's capabilities.

Image 1.1: Front and back view of the vivo Y31 5G smartphone in Rose Red.
2. Setup
2.1 Unboxing and Initial Inspection
Upon opening the package, verify that all components are present and undamaged. The box should contain:
- vivo Y31 5G Smartphone
- Power Adapter
- USB Cable
- SIM Tray Ejector
- Phone Case
- Screen Protector (Pre-applied)
2.2 SIM Card Installation
- Locate the SIM card tray on the side of the device.
- Insert the SIM tray ejector tool into the small hole next to the tray and press gently until the tray pops out.
- Place your Nano-SIM card(s) into the designated slots on the tray. Ensure the gold contacts face downwards. The device supports dual SIM functionality.
- Carefully reinsert the SIM tray into the phone until it clicks into place.
2.3 Powering On and Initial Configuration
- Press and hold the Power button located on the side of the phone until the vivo logo appears.
- Follow the on-screen instructions to complete the initial setup, including language selection, Wi-Fi connection, Google account setup, and security settings.
3. Operating Instructions
3.1 Basic Navigation
The vivo Y31 5G features a touchscreen interface. Use the following gestures for navigation:
- Tap: Select an item or open an application.
- Swipe: Scroll through lists or switch between home screens.
- Pinch: Zoom in or out on photos and web pages.
- Long Press: Access contextual menus or move icons.
3.2 Funtouch OS 15 Overview
Your device runs on Funtouch OS 15, offering a customized Android experience. Explore the settings menu to personalize your device, manage notifications, and configure privacy options.
3.3 Connectivity
- Bluetooth: Enable Bluetooth in the settings to connect to wireless headphones, speakers, or other compatible devices.
- GPS: The built-in GPS allows for location services and navigation applications. Ensure location services are enabled for optimal performance.
- Wi-Fi: Connect to available Wi-Fi networks for internet access.
4. Camera Features
The vivo Y31 5G is equipped with a versatile camera system designed to capture high-quality images.

Image 4.1: Illustration highlighting the 50MP HD Main Camera and 8MP HD Portrait Camera.
- 50 MP HD Main Camera: For detailed and high-resolution photographs.
- 8 MP HD Portrait Camera: Optimized for capturing portraits with enhanced depth and clarity.
- AI Camera Features: The camera system integrates Artificial Intelligence for improved photo quality.

Image 4.2: Examples of AI Erase and AI Photo Enhance functionalities.
- AI Erase: Allows removal of unwanted objects or elements from your photos.
- AI Photo Enhance: Automatically optimizes image quality for better colors, contrast, and detail.
5. Display and Audio
5.1 Display Features

Image 5.1: Visual representation of the 120 Hz High-Brightness Dotch Display.
- 16.96 cm (6.68" inch) Immersive Display: Provides a large viewing area for content.
- 1000 Nits Brightness: Ensures clear visibility even in bright outdoor conditions.
- 120 Hz Refresh Rate: Offers smoother scrolling and a more fluid visual experience.
- TÜV Rheinland Low Blue Light Certification: Reduces harmful blue light emissions for eye comfort.
5.2 Audio Features

Image 5.2: Depiction of the dual speaker system and audio certifications.
- Dual Speaker: Delivers enhanced stereo sound.
- 400% Volume: Provides significantly louder audio output.
- Hi-Res Audio Certification: Ensures high-fidelity sound reproduction.
6. Battery and Charging
The vivo Y31 5G is equipped with a high-capacity battery and fast charging technology.

Image 6.1: Overview of the 6500 mAh battery and 44W FlashCharge capability.
- 6500 mAh Battery: Provides extended usage time.
- 44W FlashCharge: Allows for rapid recharging of the device.
Typical usage estimates:
- Up to 23 Hours YouTube Playback
- Up to 73 Hours Spotify Playback
- Up to 10.4 Hours BGMI Gameplay
7. Performance and Durability
7.1 Processor

Image 7.1: Representation of the Qualcomm Snapdragon Octa-Core Processor.
The device is powered by a Qualcomm Snapdragon Octa-Core Processor built on a 4nm advanced process, ensuring efficient performance for daily tasks and demanding applications.
7.2 Durability Features

Image 7.2: Visualizing the IP68/69 water and dust resistance features.
- IP68/69 Rating: Provides protection against dust and water ingress.
- Wet-Hand Touch Technology: Allows for smooth screen control even with wet hands.
- One-Tap Water Ejection: A feature to help clear water from the device's speakers.

Image 7.3: Certification for drop resistance.
- SGS Gold Label Five-Star Drop Resistance Certification: Indicates enhanced durability against accidental drops.
8. Maintenance
To ensure the longevity and optimal performance of your vivo Y31 5G, follow these maintenance guidelines:
- Cleaning: Use a soft, lint-free cloth to clean the screen and body. Avoid abrasive materials or harsh chemicals.
- Software Updates: Regularly check for and install system updates to benefit from the latest features, security patches, and performance improvements.
- Battery Care: Avoid extreme temperatures. For long-term storage, charge the battery to around 50% and power off the device.
- Storage Management: Periodically clear unnecessary files and applications to maintain optimal performance.
9. Troubleshooting
If you encounter issues with your device, try the following steps before contacting support:
- Device Not Responding: Press and hold the Power button for about 10 seconds to force a restart.
- App Crashing: Close the app and reopen it. If the issue persists, clear the app's cache and data in Settings > Apps.
- Network Issues: Toggle Airplane Mode on and off. Restart your device. Check your SIM card insertion.
- Battery Draining Quickly: Reduce screen brightness, disable unnecessary background apps, and limit location services.
- Factory Reset: As a last resort, you can perform a factory reset (Settings > System > Reset options). Warning: This will erase all data on your phone. Back up important data before proceeding.
10. Specifications
| Feature | Specification |
|---|---|
| Operating System | Funtouch OS 15 |
| Processor | Qualcomm Snapdragon Octa-Core (4nm) |
| RAM | 6GB |
| Internal Storage | 128GB |
| Display Size | 16.96 cm (6.68" inch) |
| Display Resolution | 1608 x 720 |
| Refresh Rate | 120 Hz |
| Main Camera | 50 MP |
| Portrait Camera | 8 MP |
| Battery Capacity | 6500 mAh |
| Charging | 44W FlashCharge |
| Connectivity | 5G, Bluetooth, GPS |
| Audio Jack | USB Type C |
| Dimensions (LxWxH) | 16.6 x 7.7 x 0.8 cm |
| Weight | 209 g |
| Water/Dust Resistance | IP68/69 Rating |
11. Warranty and Support
11.1 Warranty Information
Your vivo Y31 5G smartphone comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms, conditions, and duration of coverage. Keep your proof of purchase for warranty claims.
11.2 Customer Support
For further assistance, technical support, or service inquiries, please visit the official vivo website or contact vivo customer service through the channels provided in your warranty documentation.







