I used my phone before so everything is okay but when the screen is damaged I gave it to the store to fi it then I’ll pick it up so this is the problem, which is no service. So I need to know how to fix it or how to make my phones update because on the top of the front screen always shows the no service plss need your help
IF there is no service this has to do with you cellular connection. You might want to perform a carrier settings update
if you want to update your iPhone without a cellular connection connect to a wifi network before going to settings>general>software update
If this is not working you might want to update your iPhone via a pc or Mac instead
Update your iPhone using a Mac with macOS Catalina or higher
On a Mac with macOS Catalina or higher, you will use the finder in order to upgrade your iPhone. Make sure to Back up your device before starting the upgrade process.
On a Mac with macOS Catalina or later, you will follow the following steps:
Update your iPhone via a Mac running macOS Mojave or earlier, or on a Windows PC
On macOS Mojave or earlier, or on a windows machine, we won't use the Finder to upgrade your iOS
Instead, we will use iTunes. Make sure to Back up your device before doing any update or upgrade to your phone.
See this link for a user tip that I have written for further reference about updating
Updating/upgrading your iPhone - Apple Community
IF there is no service this has to do with you cellular connection. You might want to perform a carrier settings update
if you want to update your iPhone without a cellular connection connect to a wifi network before going to settings>general>software update
If this is not working you might want to update your iPhone via a pc or Mac instead
Update your iPhone using a Mac with macOS Catalina or higher
On a Mac with macOS Catalina or higher, you will use the finder in order to upgrade your iPhone. Make sure to Back up your device before starting the upgrade process.
On a Mac with macOS Catalina or later, you will follow the following steps:
Update your iPhone via a Mac running macOS Mojave or earlier, or on a Windows PC
On macOS Mojave or earlier, or on a windows machine, we won't use the Finder to upgrade your iOS
Instead, we will use iTunes. Make sure to Back up your device before doing any update or upgrade to your phone.
See this link for a user tip that I have written for further reference about updating
Updating/upgrading your iPhone - Apple Community
How to update my phone? Because on the screen they show the things on the top says no service
