How to Fix No Sound During Calls on VIVO X300: Step-by-Step Guide

Troubleshooting Call Audio Issues on VIVO X300

• 💡 Check call volume during an active call using the side buttons to ensure it's turned up.
• ⚙️ Navigate to Settings → Sounds & Vibration; note that call volume is adjustable only during active calls on Vivo devices.

Ruling Out External Interference

• 🔌 Disable Bluetooth via the control center or settings to eliminate potential interference from connected headphones or car systems.
• 🧼 Clean the earpiece gently with a soft brush to remove any dust or debris that might be obstructing sound.

Testing and Software Checks

• 📞 Test call audio using a different app like WhatsApp or Instagram to see if the issue is specific to the phone app.
• 🔄 Go to the control center, access settings, and navigate to System Updates to ensure your phone is running the latest software version.

Final Steps and Verification

• 💻 Restart your VIVO X300 by holding the power and volume up buttons, then swiping to restart, to apply any potential fixes.
• ✅ After the restart, test the call audio again to verify if the problem has been resolved.