---
title: "How to fix an iPhone 7 that keeps losing signal, no service error after iOS 11 update"  
description: "How to fix an iPhone 7 that keeps losing signal, no service error after iOS 11 update"  
author: "Torres mary"  
published: 2018-10-19  
canonical: https://answers.mindstick.com/qa/50818/how-to-fix-an-iphone-7-that-keeps-losing-signal-no-service-error-after-ios-11-update  
category: "troubleshooting"  
tags: ["iphone7"]  
reading_time: 1 minute  

---

# How to fix an iPhone 7 that keeps losing signal, no service error after iOS 11 update  

How to [fix an iPhone](https://answers.mindstick.com/qa/50409/how-to-fix-an-iphone-x-that-s-suddenly-slowing-down-keeps-freezing-and-lagging) 7 that keeps [losing signal](https://answers.mindstick.com/qa/51471/how-to-fix-an-iphone-se-that-keeps-losing-signal-after-installing-a-new-update), no [service error](https://answers.mindstick.com/qa/50445/how-to-fix-an-iphone-x-that-keeps-showing-no-service-error) after [iOS](https://www.mindstick.com/articles/12425/ios-11-vs-android-o-a-comparison) 11 [update](https://www.mindstick.com/forum/156355/what-is-google-pigeon-update) \
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## Answers

### Answer by Hitesh Vohra

Periodic updates containing carrier network and pertinent parameters are also sent by carriers or network [service](https://www.mindstick.com/articles/23232/maruti-suzuki-launches-service-festival-initiative) providers to improve cellular network connection and performance. When Apple publishes a new iOS version, carrier upgrades are frequently released as well. As a result, your iPhone's carrier services will be compatible with the new iOS platform. It's a different upgrade from the ones Apple has released. Make sure your iPhone is connected to a Wi-Fi or cellular network before manually checking and installing a carrier settings update: \

1. From the **Home screen, choose Settings.**
2. Select **General**.
3. To learn more, go to About.

If an **update** is available, you will be requested to change your carrier settings. To finish the carrier settings update on your **iPhone 7**, follow the onscreen prompts. **Restart your iPhone 7** when the update is complete to check if things have improved. \
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Original Source: https://answers.mindstick.com/qa/50818/how-to-fix-an-iphone-7-that-keeps-losing-signal-no-service-error-after-ios-11-update

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