How to Fix No Sound During Calls on MEIZU mBlu 21

Troubleshooting Call Audio Issues on MEIZU mBlu 21

• 💡 Check call volume by using the side buttons and ensuring it's turned up to the maximum.
• 🔊 Test the speaker mode and adjust call volume settings within the phone's sound menu.

Connectivity and Hardware Checks

• 🔌 Disable Bluetooth to rule out interference from connected devices like headphones or car systems that might be routing audio elsewhere.
• 🧼 Gently clean the earpiece using a soft brush or cloth to remove any debris that could be obstructing sound.

Software and System Resets

• 📱 Test audio with other apps like WhatsApp to determine if the issue is specific to regular calls.
• 🔄 Restart the MEIZU mBlu 21 by holding the power button and selecting the restart option.
• ⚠️ As a last resort, perform a factory reset by navigating to Settings > System > Reset > Erase all data, ensuring you back up your phone first.