How to fix Apple iPhone 6s problem on calls that go straight to voicemail [Troubleshooting Guide]

The iOS 11 brings a number of new amazing features for an even better iOS experience. However, as not all those who have implemented the update get the same positive outcomes. Unfortunately, the new update has inflicted various types of device issues including those that are related to voicemail on iPhone 6s. Some have it that voicemail has stopped working while others found out that their calls go straight to voicemail after the iOS update installation. If you are having the same trouble and don’t know what to do, then this post might be able to help you. Read on to learn more about other possible factors that can trigger voicemail issues to manifest on your iPhone 6s aside from iOS update. And should you wish to troubleshoot the problem on your end, you may refer to the recommended workarounds and potential solutions highlighted below in this page.

But before we jump right into our troubleshooting, if you have other issues with your iPhone, make sure you drop by our troubleshooting page because we’ve already addressed a lot of issues reported by our readers. Find issues that are similar with yours and use the solutions we suggested. If they don’t work for you or if you need more help, fill up our iPhone problems questionnaire and give us more accurate information about your problem so we can give you the best solution.

Possible causes

Aside from a faulty update to iOS, voicemail issues on the iPhone 6s can also be triggered by other factors including incorrect settings or random software/app glitches. Most likely the underlying cause lies within the software structure, thus there is a higher chance for end-users to fix it on their end. Among the common factors that are linked to voicemail issues affecting iOS devices like the iPhone 6s would include but not limited to No service, Do Not Disturb feature that is turned on, and carrier settings. In most cases, the problem is linked to an active DND feature on the iPhone as well as Do Not Disturb While Driving. If you just have implemented the latest iOS update, then that is most likely the culprit especially if everything was working fine with your iPhone 6s voicemail and calling functions prior to the update.

Keep reading to learn what to do in case you will encounter similar issues with calls that go straight to your iPhone 6s voicemail or other related problems.

Recommended workarounds and possible solutions

The following solutions and workarounds based on the possible causes. To save time and effort in troubleshooting the problem, try to isolate the problem or determine the underlying cause as much as possible. One way to do so is to think of when the very first symptom has manifested or what happened before the problem started. However, if doing so is difficult or not possible to be done in your case, then you may opt to try each of the possible solutions and applicable workarounds including the ones highlighted below.

Be sure to test your device after completing each method to determine whether or not the problem has been resolved. Proceed to the next applicable solution if necessary.

First solution: Check your iPhone signal.

To rule out the possibility about the problem being caused by network issues like signal loss or poor network signal, verify if your iPhone 6s is getting good signal strength. On the status bar, you will see whether it’s getting a signal from the cell towers or not based on the signal bars or indicator. Similar problems can occur if your iPhone is too far away to connect to the network towers or getting intermittent signal to the network.

Second solution: Toggle Airplane mode on or off.

Some iPhone users who have encountered the same problem in which their calls go straight to the voicemail were able to obtain remedy by turning Airplane Mode on for a few seconds and then turn it back off. This trick has been deemed a helpful trick in dealing with network connectivity issues including those that might have affected the iPhone 6s voicemail functions.

If you want to give it a try, here’s how it’s done:

  1. Navigate to your iPhone Settings.
  2. Tap Airplane Mode.

Alternatively, you can open the Control Center to access and configure Airplane Mode.

  1. Toggle the switch next to Airplane Mode to turn it on.
  2. Wait for a few seconds and then turn Airplane Mode back OFF.

Now reboot your iPhone 6s and after the reboot, try to make a test call to see if it’s still going straight to voicemail or not anymore.

Third solution: Check your iPhone settings.

An iOS feature that you need to consider checking in this case is the so-called Do Not Disturb or DND. This feature is mainly used to silence all incoming calls, text messages notifications and alert sounds on your iPhone. But unlike silent mode, DND can also be used to send incoming calls straight to voicemail as you would prefer.

An indication that Do Not Disturb feature is enabled or active is the crescent moon icon found on the left of the battery icon on the status bar of your iPhone. If you see this icon, it means that DND is turned on and might be the main reason as to why you are not getting calls on your device. To access and configure this feature on your iPhone 6s, follow these steps:

Swipe your finger up from the bottom of the screen. Doing so will launch the Control Center.

Locate the crescent moon icon then tap it with your finger. Doing so will turn the DND feature on or off. In this case, DND has to be turned off to disable the feature on your iPhone.

Alternatively, you may use your iPhone’s settings menu to configure this feature and other relevant options. Here’s how:

  1. Tap Settings from the Home screen.
  2. Scroll to and tap Do Not Disturb.
  3. Tap Scheduled from the given options.
  4. Turn off schedule for enabling the feature on your device automatically.

You can also use Siri to access and configure DND feature using voice command on your iPhone 6s. Here’s how:

  1. Press and hold the Home button to open the Siri app.
  2. When Siri is opened, say Turn off Do Not Disturb.
  3. Wait until Siri processes your command. It will notify you when Do Not Disturb is turned off.

If you just upgraded to iOS 11, you will need to verify a new DND feature called Do Not Disturb While Driving. This new iOS feature works by restricting phone calls while driving. It automatically turns on when your iPhone detects that you are driving a vehicle. As a result, your iPhone won’t ring when using it in your car. Calls will most likely go straight to voicemail in this case. To access and configure this feature on your iPhone 6s, follow these steps:

  1. Tap Settings from the Home screen.
  2. Tap Control Center.
  3. Tap the Do Not Disturb While Driving icon to turn the feature OFF.

If you don’t see this icon on the control center, it means that you still need to add it manually.

  • To do so, head over to your iPhone Settings-> Control Center-> scroll down and tap the green plus (+) sign on the left side of the Do Not Disturb While Driving option.
  • After doing so, swipe your finger up from the bottom of the screen to launch the Control Center. You should see the new icon added.

Fourth solution: Turn on Announce Calls.

The iOS 11 platform introduces a new feature called Announce Calls that is used to configure how often or when the device should announce calls. If you just installed the latest update, this is possibly causing your trouble. To check and configure this feature on your iPhone 6s, follow these steps:

  1. Tap Settings from the Home screen.
  2. Tap Phone to launch the phone app.
  3. Scroll to and tap Announce Calls.
  4. Select Always from the given options. Once selected, a checkmark will appear next to it. Among other available options include Headphones and Car, Headphones Only, and Never. Selecting any of these options would result to incoming call alerts not heard from your iPhone.

After making necessary changes to this feature, reboot your iPhone 6s then try to make a test call to see if it is already working as intended.

Fifth solution: Check carrier settings and update if necessary.

Changes brought by carrier settings update can also trigger similar issues to occur on your iPhone 6s. These settings let your iPhone connect to your carrier’s wireless network. Pertinent issues may also arise if the carrier settings on your iPhone 6s are out of date. Connectivity issues between your iPhone and your wireless carrier’s network are likely to manifest in this case. This will result to incoming calls going straight to voicemail or not working at all. Here’s how to check your carrier settings and install update, if available:

  1. Go to Settings.
  2. Tap General.
  3. Tap About.
  4. A notification will show up with an alert message saying that New Settings are available. Would you like to update now? This means that a carrier settings update is available for your iPhone 6s.
  5. Tap Update to download and install update.

After the carrier settings update installation, perform a test call on your iPhone 6s and see if it is already working fine. Otherwise, try other applicable solutions.

Sixth solution: Reset Network Settings on your iPhone 6s.

Incorrect changes to the network settings can also lead to the same problem on your iPhone 6s in which calls are going straight to voicemail. Should this be the case, you have the option to revert the changes back to its previous configure before the onset of the problem. But if identifying which settings or options have been changed is not possible, you can just reset network settings on your device. Doing so will eliminate all network configurations you’ve made and restore it to defaults. Be sure to take note of your network passwords though before you proceed since these will also be deleted in the process. Once you’re all set, follow these steps:

  1. Tap Settings from the Home screen.
  2. Tap General.
  3. Scroll down and tap Reset.
  4. Select Reset Network Settings.
  5. If prompted, enter your passcode to continue.
  6. Wait until the network reset is complete. Your iPhone will then reboot when it’s done.

After the reset, you will need to set up your Wi-Fi network and re-enter your Wi-Fi passwords.

If none of these is able to help and that you are still unable to receive calls on your iPhone 6s as they all go straight to voicemail, then you may now escalate the problem to your carrier or network service provider. They may be able to give you more options and recommendations or deal with the problem on their end. Also consider escalating the problem to Apple Support especially if it occurs after installing the latest iOS 11 update. Doing so will allow them to tag this among other post-update issues that need to be fixed in the next iOS update rollout.

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If you have other problems with your iOS device including iPhone 6s, you may visit our Troubleshooting Page or complete and submit this form to get further assistance from our support team. Just be sure to provide us with all necessary information, such as your iOS device model, as well as more details about the issue you have with your device. For example, when did the problem start to occur or what you did before the problem shows. This way, it would be easier for us to determine the main cause(s) and help you towards finding the best possible solution available.