When an Apple device displays the feared Call Failed Issue on iPhone notification, it’s definitely a sign of a problem—it interrupts communication. Such a problem might come from a variety of things like weak cellular signal, incorrectly configured settings, carrier issues, or outdated iOS versions.
This elaborate instructional materials cover the 14 effective methods that you will find of great help to effectively fix Call Failed Issue on iPhone.
📱 What Does Call Failed Issue on iPhone Means?
The Call Failed Issue on iPhone message appears when a device cannot keep the connection with the network. A variety of problems such as weak reception, SIM paperwork, or software conflicts may be the sources along with the solving key which lies in the identification of the root cause.
✅ Common Causes of Call Failed Issue on iPhone
- Weak or no cellular signal
- Carrier network congestion or outage
- SIM card faults or misplacement
- Airplane Mode or Do Not Disturb enabled
- Hidden caller ID or blocked contact settings
- Outdated iOS or network settings
- Malfunctioning hardware (antennas or modems)
🔧 How to Fix Call Failed Issue on iPhone – Step-by-Step Solutions
1. Force Quit and Reopen the Phone App
Glitches in the Phone app may be the cause of temporary failures.
Steps:
- Swipe up from the bottom and hold in the middle of the screen.
- Find the Phone app.
- Swipe it up to force close.
- Open it again and try to make the call one more time.
2. Check Signal Strength & Refresh the Connection
The weak signal is the most common one that will cause Call Failed Issue on iPhone.
Quick Fix:
- Swipe down to open Control Center
- Tap Airplane Mode ON
- Wait 10 seconds → Tap OFF
If you are indoors, try going outdoors or near a window.
3. Force Restart Your iPhone
Facing Call Failed Issue on iPhone then force restart can clear the bugs and the system cache.
Steps by Model:
- iPhone X and newer: Press and quickly release Volume Up, then Volume Down → Hold the Side button until the Apple logo appears.
- iPhone 7/7 Plus: Hold Volume Down + Power button.
- iPhone 6s/SE: Hold Home + Power button.
4. Turn Off Wi-Fi Calling
Network conflicts between Wi-Fi and carrier might cause a call to be blocked.
Navigate to:Settings → Cellular → Wi-Fi Calling → Toggle OFF
Alternative:Settings → Phone → Wi-Fi Calling
5. Install Carrier Settings Update
They are liable to schedule a minor repair job for the carrier’s network without informing the customers.
How:
- Go to Settings → General → About
- Wait 5–10 seconds
- If prompted, tap Update
6. Enable Automatic Network Selection
If manual network mode is selected, the wrong band may be used.
Navigate to:Settings → Cellular → Network Selection → Toggle ON
If already enabled, try toggling off, selecting manually, then re-enabling.
7. Select Appropriate Network Mode (5G/4G/LTE)
Choosing the wrong mode will definitely limit compatibility.
Follow these steps:Settings → Cellular → Cellular Data Options → Voice & Data
Select the most suitable option to improve your connection:
- Choose 4G/LTE if you want a stable connection
- Go with 5G Auto, if you are in a place with good 5G signal
Moreover, switch VoLTE OFF on old devices to see if it helps.
8. *Dial #31# to Show Caller ID
Calls from blocked numbers may lead to rejection or failure.
How to do it:
- Launch the Phone app
- Type in *#31# → Hit Call
- A confirmation indicating that your Caller ID will be visible will come up
9. Check Dual SIM Settings (If Applicable)
Incorrect SIM line might block calls.
Navigate to:Settings → Cellular → Default Voice Line → Select Preferred SIM
To assign a default SIM per contact:
- Open a contact → Tap “Always Use” → Select SIM → Tap Done
10. Remove and Reinsert the SIM (or eSIM)
Physically, SIM cards can be disturbed by looseness or dust.
Steps:
- Remove with SIM ejector
- Wipe with a dry cloth gently
- Insert again and restart
eSIM users:
- Go to Settings → Cellular
- Select eSIM and then Delete eSIM
- Then after that, either Add eSIM manually or via QR code
11. Update to the Latest iOS
Old versions usually have missing issues that are not well known.
Check for updates: Settings → General → Software Update → Download and Install
12. Reset Network Settings
Wi-Fi, VPN, APNs, and Bluetooth settings will be cleared but not your personal files.
Steps:
- Settings → General → Transfer or Reset iPhone
- Tap Reset → Reset Network Settings
- Enter passcode → Confirm
13. Check if the Number Has Blocked You
Blocked numbers often result in immediate call failures.
Test:
- Call another contact. If successful, you might be blocked by the original recipient.
- Try messaging the same number. iMessage errors often follow blocking.
14. Factory Reset (Last Resort Option)
Only use this if nothing else works.
Before you proceed:
- Backup via iCloud or Finder
Steps:
- Settings → General → Transfer or Reset iPhone
- Tap Erase All Content and Settings
- Follow prompts to reset
📞 When to Contact Carrier or Apple Support
If none of the 14 solutions worked:
- Contact your carrier to: Check for local outagesReplace SIM cardsVerify active status and bills
- Check for local outages
- Replace SIM cards
- Verify active status and bills
- Contact Apple Support if: Hardware failure suspectedPersistent issues after factory reset
- Hardware failure suspected
- Persistent issues after factory reset
🔚 Final Thoughts
The Call Failed Issue on iPhone notification is not a must-be-ruiner of your conversation. On that matter, here are 14 expert-endorsed steps that allow you to quickly identify the offending component and rectify the problem.
If the situation remains the same, save this page or share it with people who have the same problem.
📌 FAQs – Call Failed Issue on iPhone
Q: Why does my device say Call Failed Issue on iPhone even with full bars?
A: The answer to this has to do with software bugs, network congestion, problems with Wi-Fi calling, conflicts with the blocked contact list, etc.
Q: Will updating my iPhone fix call errors?
A: Absolutely, as new versions of iOS often come with a list of the most necessary bug fixes for carrier services and functionalities of calling.
Q: Can a SIM card cause calling issues?
A: Yes, indeed. In case of damage, not proper fitting, or corruption of the SIM card most commonly it is responsible for the call failure.
Q: Does a factory reset fix network problems?
A: Yes, if it is some software or setting that causes the problem then a reset will get rid of it.