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Cellular update failure

Why does my iPhone 7S keep saying no service after trying to do an iOS cellular update that fails? It doesn’t actually fail because when you go into settings and check your iOS it does say it’s running off of 15.0.2 after the T-Mobile store completed the iOS update. My phone only worked for about a week after that was completed now it keeps trying to do Cellular updates several times a day even when I shut it off in the background. I will get the error message that the cellular update failed and I cannot receive or make calls. However, my phone is running off of 15.0.2 iOS even though it’s still trying to do the update. Once in a while I can pour stop it and power it back on and get service for a very short time. When the services on, I am manually shut all of the automatic updates but it somehow still tries to make that update. I also checked The status of the update when it’s working and it says no updates needed at this time. But my phone still won’t go back to no service in the upper left-hand corner so I’m getting no cellular data and I don’t know why or how to fix it? Can anyone help?

iPhone 7, iOS 15

Posted on Dec 28, 2021 8:23 PM

Reply
Question marked as Top-ranking reply

Posted on Dec 28, 2021 10:30 PM

doreenfishie Said:

"Cellular update failure: Why does my iPhone 7S keep saying no service after trying to do an iOS cellular update that fails?[...]"

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"No Service":

If "No Service" is shown on the top-left corner of your screen, go here to fix this: If you See No Service or Searching on your iPhone or iPad - Apple Support

Similar questions

2 replies
Question marked as Top-ranking reply

Dec 28, 2021 10:30 PM in response to doreenfishie

doreenfishie Said:

"Cellular update failure: Why does my iPhone 7S keep saying no service after trying to do an iOS cellular update that fails?[...]"

-------


"No Service":

If "No Service" is shown on the top-left corner of your screen, go here to fix this: If you See No Service or Searching on your iPhone or iPad - Apple Support

Dec 28, 2021 10:23 PM in response to doreenfishie

Carrier Update (Required): Released by your Cellular Service provider (Carrier Update), affects your Outgoing / Incoming calls, SMS, Data etc..



How to Update Carrier Settings

You can manually check for and install a carrier settings, update with these steps: Make sure your device is connected to a Wi-Fi or cellular network. Tap Settings > General > About. If an update is available, you'll see an option to update your carrier settings.

Update your carrier settings on your iPhone or iPad - Apple Support



Few Carrier (Cellular Service Provider) does not provide Carrier Settings in full but they offer APN settings for example

  • Google FI which has APN to be entered manually as h2g2
  • MTN Ghana which provides APN pin to be updated manually as the internet
  • BSNL in India which provides APN pin to be updated manually as bsnlnet (Watch teh GIF below)


Settings > Mobile Data > APN [under Mobile Data APN] enter the APN pin


View and edit your APN settings

If your carrier allows it, you can view your APN settings in one of the following locations: Settings > Cellular > Cellular Data Options > Cellular Network. Settings> Mobile Data > Mobile Data Options > Mobile Data Network.


View and edit your Access Point Name (APN) on your iPhone ...




Use the APN pin based on your carrier. Ask them (Your Carrrier) or search using any search engine.

Cellular update failure

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