Apparently, we have encountered the problem in iPhone X, that users are not able to make VoIP calls on WhatsApp, Facebook, Skype, and Viber such applications. They also tried to make calls on iPhone XR/XS/XS Max/8 Plus/8/ 7 Plus with the same latest version, and you may surprise that it is working perfectly on iPhone 6S. So, the conclusion is that your iPhone X needs some cure to work thoroughly.
After deeply analyzing the major problem we will recommend you to follow the steps and try to troubleshoot the issue and enjoy VoIP calls on any application without interruption.
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When you follow these solutions, you must try to make calls over VoIP after each tip.
Fix iPhone X VoIP Calls Not working
Fix #1- Try hard restarting the device
When you force restart the device all the applications will get closed, and system programs get shuts for seconds, and again it will work as before.
Step #1: First of all, just press the Volume Up key and then release.
Step #2: Then press the Volume Down key and release.
Step #3: Now you have to long press the Power button until the Apple logo appears on display.
Fix #2- Delete and re-install the VoIP Apps
Once you delete these applications, it will remove all your Document and Data which is stored on the iPhone.
Step #1: Press and hold the particular application which you want to delete.
Step #2: You will see a small cross on the top-right corner, tap on it and give final confirmation to uninstall it.
Thereafter you have to download the applications from the App Store.
Get here: Fix iPhone Call failed
Fix #3- Reset all settings [#1 Solution to fix iPhone VOIP Problems]
Sometimes certain settings are affected by bugs when you move to a new device with all the settings of the old device. For that, you have to Reset All Settings in iOS and the device will follow the default settings of your device.
Step 1: Go to Settings App.
Step 2: Tap on General and then Reset.
Step 3: There, Tap Reset All Settings.
Step 4: Finally tap on confirmation to complete the process Reset All Setting successfully.
Still, the problem of iPhone X VOIP call not working and do you have other tricks apart from given above please let me know in the comments. We’d like to hear from you.