Call Failed on iPhone after iOS 16.4 Update? Here’s Fix

how to fix iphone Call failed in iOS 11 or later

Are you facing that your iPhone call failed After iOS 15 update, and after iOS 16 Update? Let’s Follow this article guide step-by-step.

Are you having trouble with your iPhone constantly saying call failed? Hmm, we know that you are feeling lousy experiences while making or receiving a call from your friends, family members, and those people who are in contact with even good signal strength. Don’t worry my friend. We know that the iPhone call failed repeatedly and cut the call off is a common problem. Here I’ll give you a decent suggestion to fix quickly.

Generally, This problem arrives on the iOS device due to outdated software running on the iOS device. Or Some internal software error crashing or interrupting connectivity issues while making a call. And the next your iPhone keeps saying call failed.

Hence, I used a variety of tips to solve the call failed and system failure bug. Also, are you looking for an iPhone voicemail call failed? Get the detailed tutorial on Setup Voicemail to fix.

Get Rid of iPhone Call failed after iOS Update: Fix Unable to make a call

Fix #1. Dial *#31#

You guys, open the Phone app, tap on Keypad, and then dial *#31#. Cause it is one, the straightforward point to make and receive a call without any interruption.

Note: Sprint users especially fix this issue by dialing “##873283#” and tap o the call button. Your Handset will search your profile and install a new Profile update on the device.

Also, Re-Insert SIM using SIM eject tools comes with your iPhone box inside.

Dial ##31# to fix call failed iPhone

Fix #2. Airplane Mode [Enable & Disable]

turn on turn off Airplane Mode in iOS 11 iPhone

An alternative, this is a vital clue that can make a call again as if you used it in the past iOS ecosystem iOS 14. Therefore, turn on Airplane Mode in the latest iOS and then turn the toggle off. Many users say this solution is very very useful. To do that open up by swiping up the menu, you can also open via Settings App to enable/ disable airplane mode on your iPhone.

Fix #3. Disable VPN

VPN app installed on your iPhone loses the Device Privacy and Security. That’s against the Apple’s Privacy & Policy. So, iPhone and iPad users have to use VPN for short time or Should be turned off after use.

Disable VPN and Try: Go to your iPhone settings and Disable VPN, Settings > VPN [Turn off VPN Toggle], if the VPN can’t turn off the toggle then Remove the VPN from iPhone settings.

  • Uninstall VPN Profile: Go to Settings > General > Profile > Tap on VPN Profile and Delete profile.

Fix #4. Force Quit Unnecessary Apps

Sometimes unnecessary recently used apps create clutter in phone service. Hence, you have to force close unnecessary Apps via the double click home button. Get more methods to force quite an App in iOS.

Fix #5. Adjust Date & Time

Check out your iPhone Date & Time. Cause many users have trouble to change timezone automatically while they are abroad. Therefore, I’m suggesting to you,

  • Go to Settings
  • Tap General
  • Click on Date & time
tap on general settings app to change data & time in iOS 11 iPhone
  • Now turn the toggle Set automatically off and tap Time Zone to set manually.

In most cases, this workaround becomes useful.

disable Set Automatically time on iPhone iOS 11 or later

Set time zone manually in iOS 11 on iPhone

Fix #6. Caller ID

Tap on Phone app then Show my Caller ID on iPhone iOS 11 later

Caller ID setting is a function of the side of a carrier service provider like in the USA –at& t, T-mobile, Verizon, Sprint, etc. by the way, you can appear Caller ID option into Phone app settings.

  • Go to Settings App,
  • tap on Phone
  • scroll down the screen to turn Caller ID On.

Fix #7. Enable Wi-Fi Calling

Most of the time you might get Call Failed error because of Poor Connectivity or Network Down area. So Wi-Fi Calling will help you and Auto Switch to Call on WiFi. This is the only prevention technique that network providers providing most people with a Basic Cellular plan. If you the popup like below, Then Tap on Wi-Fi Calling Settings > And Enable Wi-Fi Calling on This iPhone toggle to Green.

  • Otherwise, Go to Manually settings:- Open Settings app on iPhone > Phone > Tap on Wi-Fi Calling > Enable “Wi-Fi Calling on This iPhone” toggle to Green.
Call Failed Suggest to Turn on Wi-FI Calling
Call Failed Suggest to Turn on Wi-FI Calling

Fix #8. Reboot or Hard Reset

Now you can reboot your iPhone without the power button. This way in most cases solves the iPhone call Failed problem.

Press and Hold Below buttons until you see the Apple logo on Screen,

  • iPhone 6 and Below: Sleep/Wake/Power Button + Home button
  • iPhone 7/7: Sleep/Wake + Volume Down button
  • Force Reboot Tip for iPhone 13 [Pro, Max], 11 Pro Max, XS Max, iPhone XS, iPhone XR, iPhone X, iPhone 8 Plus, and iPhone 8 Users:
    1: Press and Quickly Release Volume Up button,
    2: Press and Quickly Release Volume Down Button,
    3: Press and Hold the Side Button until you see the Apple logo on Screen. To Start the iPhone, Again press the Side button until the startup apple logo on the screen.

Now turn on iPhone, Press Sleep/Wake, or Side button once.

Fix #9. Reset Network Settings

Go to the Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings > Reset Network Settings with info “This will delete all network settings,
returning them to factory defaults”


Reset your iPhone network settings to make the phone call line error-free. If you’re a newbie, then get here how to reset network settings on iOS.

Fix #10. Reset your iPhone to Factory Setting

how to factory reset iPhone 6 plus on iOS 8 and iOS 9

If none of the above workarounds doesn’t work in your case, then you must be reset your iPhone to factory settings.

You can apply this article on all iPhone models, iPhone 13, iPhone 12, iPhone 11 pro max, XR, XS Max, XS, iPhone 8/8 Plus, iPhone 7/ 7 Plus, iPhone 6S/ 6S Plus, iPhone 6/ 6 Plus, iPhone SE/ SE 2020 and iPhone 5S.

We have suggested above mentioned all the possible troubleshooting. Now let me know your feedback that what was helpful to resolve iPhone call failed iOS in the comments.

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