Introduction
This manual provides essential instructions for setting up, operating, maintaining, and troubleshooting your vivo Y31 Pro 5G smartphone. Please read this manual thoroughly to ensure proper usage and to maximize the device's capabilities.

Image: Front and back view of the vivo Y31 Pro 5G smartphone in Dreamy White.
What's in the Box
Upon unboxing your vivo Y31 Pro 5G, verify that all the following items are included:
- vivo Y31 Pro 5G Smartphone
- Phone Case
- Power Adapter
- SIM Tray Ejector
- Screen Protector (Pre-applied)
- USB Cable
Setup
1. 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) and/or microSD card (if applicable) into the tray with the gold contacts facing down. Ensure proper orientation as indicated on the tray.
- Carefully reinsert the tray into the phone until it clicks into place.

Image: Side view of the vivo Y31 Pro 5G, illustrating the SIM card tray and physical buttons.
2. Initial Power On and Basic Setup
- Press and hold the Power button (located on the side) until the vivo logo appears.
- Follow the on-screen prompts to select your language, region, and connect to a Wi-Fi network.
- Sign in with your Google account or create a new one to access Google services and the Play Store.
- Set up your preferred screen lock method (PIN, pattern, password, fingerprint, or face unlock).
Operating Instructions
Display Features
The vivo Y31 Pro 5G features a 17.06 cm (6.72 inch) FHD display with a 120 Hz refresh rate for smooth visuals and a high brightness mode of 1050 Nits for clear visibility in various lighting conditions.
- To adjust brightness: Swipe down from the top of the screen to open the notification panel and drag the brightness slider.
- To change refresh rate: Navigate to Settings > Display & Brightness > Screen refresh rate and select your preferred option (e.g., 120Hz, 60Hz, or Smart Switch).

Image: Illustration highlighting the High Brightness FHD Display with 1050 Nits and 120 Hz Refresh Rate.
Camera Usage
The device is equipped with a 50 MP main rear camera, a 2 MP bokeh camera, and an 8 MP selfie camera. It supports 4K video recording.
- To open the camera: Tap the Camera icon on your home screen or lock screen.
- Switch modes: Swipe left or right on the viewfinder to select modes like Photo, Portrait, Video, Night, etc.
- 4K Video Recording: Ensure you are in Video mode and select the 4K resolution option if available in settings.
- AI Features: Utilize AI Erase and AI Photo Enhance for improved photo editing directly on your device.

Image: Close-up of the vivo Y31 Pro 5G's rear camera module, detailing the 50 MP HD Main Camera and 2 MP Bokeh Camera.

Image: Visual comparison demonstrating the enhanced clarity of 4K video recording.

Image: Examples of AI Erase and AI Photo Enhance features from the AI Suite.
Battery Management
The device is powered by a 6500 mAh battery and supports 44W FlashCharge for rapid charging.
- Charging: Use the provided Power Adapter and USB Cable for optimal 44W FlashCharge performance.
- Battery Optimization: Access Settings > Battery to view usage statistics and enable power-saving modes.

Image: Illustration of the 6500 mAh battery and 44W FlashCharge capability.
Audio Features
Experience enhanced audio with Dual Stereo Speakers and Hi-Res Audio certification.
- Volume Control: Use the volume buttons on the side of the device.
- Audio Settings: Adjust sound profiles and equalizer settings in Settings > Sound & Vibration.

Image: Depiction of Dual Stereo Speakers and Hi-Res Audio certification.
Connectivity
The device supports Bluetooth, Wi-Fi, and USB connectivity.
- Wi-Fi: Go to Settings > Network & internet > Wi-Fi to connect to available networks.
- Bluetooth: Enable Bluetooth in Settings > Connected devices > Bluetooth to pair with other devices.
- USB: Connect your phone to a computer using the USB cable for data transfer or charging.
Maintenance
Cleaning Your Device
- Use a soft, lint-free cloth to gently wipe the screen and body of the phone.
- Avoid using harsh chemicals, abrasive materials, or excessive moisture.
- The device has an IP64 rating for dust and splash resistance. Avoid submerging it in water.

Image: Visual representation of the IP64 water resistance feature.
Software Updates
Regularly check for and install software updates to ensure optimal performance, security, and access to new features. Go to Settings > System > System update.
Storage Management
Your device comes with 128GB of internal storage. To manage storage, go to Settings > Storage. You can clear cache, uninstall unused apps, or move files to cloud storage.
Troubleshooting
If you encounter issues with your vivo Y31 Pro 5G, refer to the following common solutions:
- Device not powering on: Ensure the battery is charged. Connect the phone to the charger for at least 15 minutes, then try powering on again. If unresponsive, perform a force restart by holding the Power button for 10-15 seconds.
- Poor network signal: Check if your SIM card is properly inserted. Try restarting the device or toggling Airplane Mode on and off. Ensure you are in an area with network coverage.
- Apps crashing or freezing: Close and reopen the app. Clear the app's cache and data in Settings > Apps > [App Name] > Storage. Ensure the app and your phone's software are up to date.
- Battery draining quickly: Reduce screen brightness, disable unnecessary background apps, turn off Wi-Fi/Bluetooth when not in use, and check battery usage in settings to identify power-hungry apps.
- Touchscreen unresponsive: Restart the device. If the issue persists, consider a factory reset (back up your data first).
For further assistance, contact vivo customer support or visit an authorized service center.
Specifications
Key technical specifications for the vivo Y31 Pro 5G smartphone:
| Operating System | Funtouch OS 15 |
| Processor | MediaTek Dimensity 7300 |
| RAM | 8 GB |
| Internal Storage | 128 GB |
| Display Size | 17.06 cm (6.72 inch) |
| Display Resolution | 2408 x 1080 (FHD) |
| Rear Camera | 50 MP + 2 MP |
| Front Camera | 8 MP |
| Battery Capacity | 6500 mAh |
| Charging | 44W FlashCharge |
| Connectivity | 5G, Bluetooth, Wi-Fi, USB, GPS |
| Dimensions | 16.6 x 7.6 x 0.8 cm |
| Weight | 208 g |
| Durability | Military Grade (MIL-STD-810H), IP64 Water Resistance |

Image: Illustration of the MediaTek Dimensity 7300 Processor.

Image: Visual highlighting the Military Grade Durability (MIL-STD-810H) of the device.
Warranty and Support
For warranty information, please refer to the warranty card included with your product or visit the official vivo website. For technical support, service, or inquiries, please contact vivo customer service through their official channels.
Manufacturer: vivo Mobile India Pvt Ltd
Country of Origin: India





