Troubleshooting App Call Quality - Prefer Mobile Data

If you're experiencing choppy audio, delays, or distorted calls (e.g., sounding "underwater" or "far away"), the issue is likely due to your network connection or device settings.

Optimize Your App to Prefer Mobile Data Over Wi-Fi

Sometimes, Wi-Fi networks can cause call quality issues due to interference, congestion, or router restrictions. You can set your Unitel Voice mobile app to prioritize mobile data (5G/LTE) over Wi-Fi for better call quality.

How to Enable "Prefer Mobile Data" in the Unitel Voice App

1. Open the app and go to the Dial Pad screen.
2. Tap the gear icon (⚙️) or three-line menu (☰) in the top-right corner.
   
3. Select "Preferences".
   
4. Tap "Network".
   
5. Choose "Network Priorities for RTP".
   
6. Select "Prefer Mobile Data".
   
7. Tap "Done" to save your changes.
   

Your app will now prioritize mobile data over Wi-Fi for VoIP calls, reducing network-related issues.

Troubleshooting Call Quality Issues

If you're still experiencing call quality problems, follow these steps:

1. Test Your Connection Strength

   • Move to a location with better network coverage.

   •  Turn off Wi-Fi and test your call using cellular data (5G/LTE).

   • If the problem disappears, your Wi-Fi network is likely the issue.

2. Common Wi-Fi Issues That Affect Call Quality

   • Is your network overloaded?

     • Streaming, large downloads, or multiple devices using bandwidth can affect VoIP calls.

   • Are you in a weak signal area?

     • Move closer to your router and test if call quality improves.

   • Are you in transit?

     • If you’re moving (e.g., driving), your phone is switching between cellular towers, which can cause call drops or quality fluctuations.

Checking Your Network for Persistent Issues

If call quality issues persist, the problem may be related to your router or ISP blocking VoIP traffic.

Ask yourself these questions:

• Do issues happen only on inbound calls?
• Do issues happen only on outbound calls?
• Do all devices connected to this network experience the same issue? (e.g., both your phone and tablet)

If all devices are affected, your network or ISP may be blocking or restricting VoIP traffic. In this case, you may need to adjust your router settings or contact your internet provider.