iPhone not working after 17.2.1 update

After updating my iPhone last night to 17.2.1 I can no longer connect to my network provider. Tried the resets and still it does not work!

very frustrating.

Trusted Apple and iPhone for years, now not so sure

Posted on Dec 21, 2023 8:24 AM

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Posted on Dec 28, 2023 10:22 AM

Solved my problem after 8 hours of troubleshooting! After the 17.2.1 update, my iPhone 14 Pro Max would not send or receive calls and got hot from accelerated battery drain. First AppleCare walked me through hardware diagnostics, network resets, backups and restores but the problem persisted. Next, Verizon helped me with a new eSIM, but the problem continued. Next, I focused on my company's corporate software, because I was intrigued by the VPN discussion in this forum. While I don't use a VPN, my iPhone is managed by my company's installation of Microsoft InTune, which I noticed (Settings:General:VPN & Device Mgmt) had a signing certificate (IOSProfileSigning.manage.microsoft.us) that had expired December 12, 2023. To test this theory, I removed this Management software and my phone's cellular calls worked perfectly again! So for the final steps, I worked with my company's IT department to reinstall the Management software, which has an updated IOS signing certificate, and the phone is now back to normal. Sharing in case others find my painful tech journey useful.

370 replies

Jan 22, 2024 7:35 AM in response to Hedgehog64

my phone force updated to IOS 17.2.1 overnight. I woke up to the black screen of death. Phone on and making sounds with a black screen. After trying force a restart on the phone about 8 times, it finally came on. Very frustrating. It also put extra useless apps on my phone. If I needed a journal app, I would have downloaded one myself. I can’t stand when they add apps on my device with the updates. Always messing stuff up.

Jan 22, 2024 10:39 AM in response to Hedgehog64

auto Update last night to 17.2.1.

can’t use data from my provider. I can still call out but unless I’m connected to a wifi server can’t get online. What is going on with you Apple? 17.1 update has been a mess since you released it. So many glitches it’s like a bed bug infestation. Instead of new updates fixing things its making things worse with each new version. Get your act together before releasing these bug infested updates.

Jan 24, 2024 10:35 AM in response to lonnieprice

Did your IT department inform you of the issue with Intune or how it was fixed after the reinstall? Was it an issue with how the phone connects the Intune cloud then somehow blocks the cellular service. Did they update or change your profile. I have also tried the uninstall reinstall step but the issue will start again after a few hours. Thanks.

Jan 24, 2024 8:08 PM in response to Steffadams

Hi Steff, with great respect, I'm glad your problem was solved. But it could be helpful to the rest of us if we knew what advice you got from 1970_73. We can see who you replied to, but the problem is, there are (at this moment) 22 pages of posts and comments in this thread. I've looked back 3 or 4 pages from here and can't find the comment you're referring to. So could you please post the advice you got? Thanks!

Jan 25, 2024 7:23 AM in response to cosmicrepairdude

cosmicrepairdude wrote:

Hi Steff, with great respect, I'm glad your problem was solved. But it could be helpful to the rest of us if we knew what advice you got from 1970_73. We can see who you replied to, but the problem is, there are (at this moment) 22 pages of posts and comments in this thread. I've looked back 3 or 4 pages from here and can't find the comment you're referring to. So could you please post the advice you got? Thanks!

If you click on the “in response to” line above a post it will jump to the location of the post that the response was to.

Jan 25, 2024 10:33 AM in response to Lawrence Finch

Lawrence Finch wrote:


cosmicrepairdude wrote:

Hi Steff, with great respect, I'm glad your problem was solved. But it could be helpful to the rest of us if we knew what advice you got from 1970_73. We can see who you replied to, but the problem is, there are (at this moment) 22 pages of posts and comments in this thread. I've looked back 3 or 4 pages from here and can't find the comment you're referring to. So could you please post the advice you got? Thanks!
If you click on the “in response to” line above a post it will jump to the location of the post that the response was to.

Thanks so much, now I know!

And now I see how to quote, which makes it even clearer.

Feb 10, 2024 4:26 PM in response to Hedgehog64

Since I updated my phone, all phone calls are being sent to voicemail immediately. The phone will light up like a call is coming in and hang up. This has happened to every call that I have received since the update. I have done a hard reset around 10 times trying to get the phone to start working. I’ve also reset the network connection several times. Is there something I can do?

Mar 9, 2024 8:56 AM in response to Hedgehog64

After updating my iPhone to the 17.2.1, I’ve had endless problems. Went to Apple, they found no problem. They wanted to reset my phone. Then, they sent us to Verizon. They switched out my SIM for an eSIM. Still having problem. Called Verizon customer service. They sent me a new phone. Updated automatically. Same problem. No one can hear me. I may as well not have a phone. When is the fix coming? I can’t stand this!?!

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iPhone not working after 17.2.1 update

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