Call failure is the most irritating situation for any mobile phone users. Of late, there has been a rampant complaint of calls failure on iPhone. The trend is also seen when people call other phones from their iPhones. Some users complain that they face this problem while making calls; some also grumble that this technical glitch can be experienced on all Apple smartphones like iPhone 7, 7 Plus, iPhone 6s, 6s Plus, 6, 6 Plus, iPhone 5, 5s and 5c. What surprises us that this call failure is experienced most of the times on iOS 10.

We have received many such queries from our readers and then we have done some research and came with solutions.

Call Failed on iPhone

Here is how to fix call failed on iPhone 7 Plus, 7, 6(s) Plus and iPhone 6(s) in iOS 10.x

Dial *#31#

Dial 31 from iPhone to Fix Call FailedOne of the easiest ways to fix the problem of call failed on your iPhones is to dial *#31# and Bob is your uncle!

Toggle Airplane Mode

Swipe up the Control Centre from the Home Screen and put your iPhone on Airplane Mode and wait for few seconds then turn it off. You can also do this by going to Settings, where Airplane Mode is the very first option. This is one of the efficient ways to fix the issue.

Turn On Airplane Mode on iPhoneorToggle Airplane Mode from iPhone Control Center

Close Unnecessary Apps

Some users have the habit of keeping so many apps open simultaneously. This, of course, drains your memory and results into call failing. A smart user will never do this. Close unnecessary apps on your iPhone by double pressing home button and swipe up the apps. Agreed that your phone is latest and boasts many powerful features, but it is always wise to save some memory.

Date & Time

This might sound funny, but it works when you tamper with Date & Time in your iPhone. Well, as a matter of fact, you don't actually have to interfere with date and time; just go to Settings → tap on General → select Date & Time. Now, turn off Set Automatically. Finally, select your home town manually and you might fix the problem.
Tap Settings General on iPhoneDate and Time Settings on iPhoneTurn Off Automatic Date and Time Setting in iPhone

Caller ID

Caller ID option is subject to the mobile service provider you have opted for. Hence, this might not work on all iPhones; you can still take a chance. Go to Settings and tap on Phone; now tap on Show My Caller ID and toggle it on. If this fails to work, you can also turn off Call Forwarding and Call Waiting options.
Turn Off Show My Caller ID on iPhone


This could be the one-stop solution for many problems related to your iPhone; whenever something happens, we tend to restart the device as we used to do while using laptop or desktop computers. Hold the Wake/Sleep button (on the right side of your iPhone) and turn your phone off. After a few seconds, hold the button again to turn it on.

Reboot iPhone SE or earlier

How to Restart-Reboot iPhone 6 and 6 Plus

Reboot iPhone 7/7 Plus

Press and hold the volume down button on your iPhone 7/7 Plus while still holding the On/Off button. Keep holding both buttons for 10 seconds.

Reboot iPhone 7-7 Plus

Reset Network Settings

If you think that network is the culprit behind call failed on iPhone, you can go for Reset Network Settings. Go to the Settings, then General and choose Reset option from the bottom. From Reset, tap on the third option, i.e. Reset Network Settings.
Reset Network Setting on iPhone in iOS 8

Reset Your iPhone to Factory Setting

Since this action will erase all your data from iPhone, keep this option as your last resort. Before you take any action on this, make sure that your data is secured and stored. To reset your phone to factory setting, tap on Settings, then tap on General. After this, go to the bottom and tap on Reset. This will open a few options from which you need to choose Reset All Settings.

Reset All Settings in iPhone 6 and 6 PlusThat's it for now.

Hope these tips help you to troubleshoot the issue. Let us know your feedback in the comments, on Facebook, Twitter, and Google Plus. Also, make sure to download our app on your iPhone and iPad.

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Jignesh Padhiyar is the founder of who has a keen eye for news, rumors and all the unusual stuff that happens around iPhone and iPad.
  • Blanca Sarizta

    none of these work on my iPhone, I’m using iPhone 6+ with iOS 9.1 in it. it is happening since i use iOS 9.1. please tell me how to fix this? thanks

    • Aleksander Hoff

      I have the exact same issue on my iPhone 6S Plus. The call works fine, but whenever someone hangs up, or I do not pick up the phone, I get the message saying “Call failed”, and an option to call back or exit.

  • Kelowna77

    I’d been having this problem with one specific number, and the first option worked!

  • loklok2t

    This problem can also be solved turning the cellular mode to “data only” cause some of the carrier may cut the phone automatically if 4G is on during a phone call. hope its help cuz i had been struggling from this problem for some days. :)

  • iAhmed

    None of these worked for me, however, after asking a friend of mine to call me on mobile, problem resolved.

  • Any chance you could explain _why_ *#31# should work?

    Otherwise it looks like the usual voodoo…

    • Kelowna77

      I’d like to know too. Mine was only failing to one specific number, which was annoying. That option worked tho, so I’d love to know why