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WiFi Calling

Last Update a year ago

What is WiFi Calling? What's the Difference Between WiFi Calling and Cellular Calls? What Should I Know About WiFi Calling Security and Privacy? How to Enable WiFi Calling on Your Device? How Does WiFi Calling While Traveling Internationally Work?

How Can You Troubleshoot Common WiFi Calling Issues?

Sam

Last Update a year ago

Even though WiFi Calling is designed to work seamlessly, you may occasionally encounter issues. This comprehensive guide will help you resolve the most common problems and get back to making clear, reliable calls over WiFi.


Call Quality Issues


Problem: Choppy or Robotic Voice


Causes and Solutions:


  1. Insufficient Internet Speed

    • Minimum required: 1 Mbps upload/download

    • Test speed at speedtest.net

    • Move closer to the router

    • Disconnect other devices if needed

  2. Network Congestion

    • Avoid peak usage times

    • Switch to 5GHz WiFi if available

    • Limit streaming on the same network

    • Consider upgrading the internet plan

  3. Router Problems

    • Restart router (unplug for 30 seconds)

    • Update router firmware

    • Adjust QoS settings for voice priority

    • Replace aging equipment

Problem: Echoes During Calls


Solutions:

  • Lower speaker volume

  • Use headphones or earbuds

  • Move to a quieter location

  • Check for case interference

  • Disable noise cancellation temporarily

Problem: One-Way Audio


Common Fixes:


  • Toggle WiFi Calling off/on

  • Reset network settings

  • Check router firewall settings

  • Ensure ports aren't blocked

  • Try a different WiFi network

Connection Problems


Problem: WiFi Calling Won't Activate


Step-by-Step Resolution:


  1. Verify Compatibility

    • Check phone model supports the feature

    • Ensure running the latest iOS/Android

    • Confirm VLE Mobile compatibility

  2. Account Status

    • Verify active VLE Mobile service

    • Check no account restrictions

    • Ensure feature provisioned

  3. Software Updates

    • Install carrier settings updates

    • Update the phone operating system

    • Restart after updates

  4. Network Reset

    • iPhone: Settings > General > Reset > Reset Network Settings

    • Android: Settings > System > Reset > Reset WiFi, Mobile & Bluetooth

Problem: Calls Drop When Moving


Understanding Handover:


  • WiFi Calling doesn't seamlessly handover while moving

  • Calls may drop when leaving the WiFi range

  • Different from cellular tower handover

  • Stay within WiFi coverage during calls

Solutions:


  • Remain stationary during important calls

  • Ensure strong WiFi throughout the space

  • Use WiFi extenders if needed

  • Consider a mesh network system

Problem: Can't Make Calls But Can Receive


Troubleshooting Steps:


  1. Check Dialing Format

    • Include the area code for all calls

    • Use +1 for US numbers when abroad

    • Verify that the number format is correct

  2. Firewall Issues

    • Certain ports must be open

    • Contact IT for corporate networks

    • Try a different network

    • Disable VPN temporarily

  3. Emergency Address

    • Must be configured

    • Update if you recently moved

    • Verify address accepted

    • Re-enter if needed

Network and Setup Issues


Problem: "No Service" or "Emergency Calls Only"


When on WiFi, Try:

  1. Airplane Mode Method

    • Enable Airplane Mode

    • Turn WiFi back on

    • Wait for WiFi Calling to activate

    • Should see "VLE Mobile WiFi"

  2. SIM Card Check

    • Remove and reinsert the SIM

    • Clean SIM contacts gently

    • Try a different SIM slot (dual SIM phones)

    • Request a replacement if damaged

  3. Carrier Settings

    • Check for updates (iPhone: Settings > General > About)

    • Install if prompted

    • Restart the phone after the update

Problem: WiFi Calling Keeps Turning Off


Potential Causes:


  1. Power Saving Mode

    • Disable battery optimization for the Phone app

    • Turn off power saving mode

    • Keep your phone charged above 20%

  2. App Conflicts

    • Check recently installed apps

    • Disable call-related apps temporarily

    • Clear phone app cache (Android)

    • Uninstall problematic apps

  3. Network Switching

    • Phone may prefer cellular

    • Set to "WiFi Preferred" mode

    • Ensure the WiFi signal is strong

    • Disable WiFi+ or similar features

Device-Specific Issues


iPhone Specific:


Visual Voicemail Not Working:

  • Toggle Airplane Mode

  • Reset network settings

  • Re-enable WiFi Calling

  • Contact support if it persists

No WiFi Calling Option:

  • Verify iPhone 5c or newer

  • Check for a carrier update

  • Ensure not jailbroken

  • May need an iOS update

Android Specific:


Can't Find WiFi Calling Setting:

  • Location varies by manufacturer

  • Search settings for "WiFi Calling"

  • Check under Advanced network settings

  • May be under "More" options

WiFi Calling Grayed Out:

  • Verify the SIM card is active

  • Check account status

  • Restart phone

  • Factory reset as a last resort

Advanced Troubleshooting


Router Configuration:


For persistent issues, check router settings:

  1. Required Ports:

    • UDP: 500, 4500 (IPSec)

    • TCP: 143, 443, 5061

    • UDP: 5060 (SIP)

  2. Recommended Settings:

    • Enable UPnP

    • Disable SIP ALG

    • QoS priority for voice

    • Latest firmware

When to Contact Support:

Contact VLE Mobile support if:

  • Problems persist after troubleshooting

  • Error messages appear

  • Account-specific issues suspected

  • Hardware problems identified

  • Multiple devices affected

Information to Provide:

  • Phone model and OS version

  • WiFi router type

  • Error messages

  • When the problem started

  • Troubleshooting attempted

Remember: Most WiFi Calling issues are resolved by ensuring a strong WiFi signal and proper settings configuration.

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