How to Fix No Service on iPhone

Co-authored by wikiHow Staff

Last Updated: October 25, 2021

This wikiHow teaches you how to fix your iPhone if you see the "No Service" message on your screen. If you're not getting mobile service on your iPhone, you may not be able to make or receive phone calls, send text messages, or use your mobile data plan to connect to the internet. The No Service problem may happen because of different issues with your iPhone, and there's a variety of fixes you can try to get service again.

Method 1

Method 1 of 5:
Resetting Network Settings

1
Open your iPhone's Settings app. Find and tap the gray gear icon on your home screen to open Settings.
2
Scroll down and tap General. This options is listed next to the
icon on the menu.
3
Scroll down and tap Reset. You can find it at the bottom of the General menu.
4
Tap Reset Network Settings. This option will allow you to reset all your cellular network configurations to factory settings.
- Alternatively, you can select Reset All Settings at the top. In addition to your network settings, this option will also reset all your software settings to factory.
5
Tap Reset Network Settings in the confirmation pop-up. This will confirm your action, and reset your network settings.

Method 2

Method 2 of 5:
Updating Your Software

1
Open your iPhone's Settings app. Find and tap the gray gear icon on your home screen to open Settings.
2
Scroll down and tap General. It's listed next to the
icon on the menu.
3
Tap Software Update in General. It's at the top of the menu. Your iPhone will now check for updates, and show you the latest iOS update available.
4
Tap Download and Install at the bottom. This will download the latest software update, and start the installation when the download is complete.

Method 3

Method 3 of 5:
Enabling Cellular Data for Voice

1
Open your iPhone's Settings app. Find and tap the gray gear icon on your home screen to open Settings.
2
Tap Cellular in Settings. This will open your cellular data options on a new page.
3
Tap Cellular Data Options. It's located below the Cellular Data switch at the top.
4
Tap the Enable LTE option.
5
Select Voice & Data. When this option is selected, your iPhone will automatically use high-speed wireless communication to enhance the quality of your voice calls.
- This will allow you to get service easier and quicker at most places.
- If you have the Cellular Data switch set to "Off," you won't see the Voice & Data option here. In this case, select Voice Only.

Method 4

Method 4 of 5:
Setting Up Date and Time

1
Open your iPhone's Settings app. Find and tap the gray gear icon on your home screen to open Settings.
2
Scroll down and tap General. It's looks like a
icon in Settings.
3
Scroll down and tap Date & Time. This will open your date and time settings on a new page.
4
Slide the Set Automatically switch to
. This will automatically set your date and time based on your current location.
- All your apps and services will use the date and time set here.

Method 5

Method 5 of 5:
Using Other Methods

1
Restart your iPhone. Make sure to turn off your iPhone, and turn it back on again to check if it solves your problem. You may just get your service back after a simple reboot.
- Also, make sure to restart your iPhone after changing your settings. It's usually a rule of thumb to restart your device for new settings to apply.
2
Take out your SIM card, and put it back in again. If a simple reboot is not working, take out your SIM card, wait for a few seconds, and put it back in again. Your iPhone may simply stop saying No Service after re-inserting your SIM.
- If you're not sure how to replace your SIM card, you can check out this article for help.
3
Contact your mobile carrier about your problem. If you're having service problems because of billing or other carrier-related issues, you will have to reach out to your mobile carrier to get more information.

Community Q&A

Question

My iPhone 5s shows "SIM Not Installed" after iOS update 11.1, Fail to fix after a reset. What I should do?

Community Answer

If resetting did not work, then try using another sim card. If that does not work, the sim reader in the phone is broken.