Related Article: If you see a Cellular, Ultra Wideband, or Apple Pay Issue message after an iOS update or restart

My Sim card is not working. Don't have any connection problem also. But it showing no service and some time searching

I'm using du mobile sim card. From yesterday It is not working. I can't call and any massages. After I check the settings, Cellular. It's showing "an update is required to use cellular data on this iphone " what to do now?

iPhone 7, 15

Posted on Sep 8, 2023 6:01 PM

Reply
1 reply

Sep 8, 2023 6:04 PM in response to akila227

Go to Settings/General/About and look at Modem Firmware. Is the entry blank? If it is you need to reinstall it by restoring the phone to factory settings, then restoring a backup. Back up the phone first, of course:

  1. How to back up your iPhone, iPad, and iPod touch - Apple Support
  2. Restore your iPhone, iPad, or iPod to factory settings - Apple Support - follow the instructions to restore using your computer, do not using Settings/General/Reset (which is not included in those instructions)
  3. Restore your iPhone, iPad, or iPod touch from a backup - Apple Support


If the modem firmware DOES have a value you may have a hardware problem. The first step is what I just posted, but after that you need to contact Apple support using the Get Support link at the top of this page.

My Sim card is not working. Don't have any connection problem also. But it showing no service and some time searching

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