iPhone not working after 17.2.1 update

If you have iTunes in a windows PC or have access to a Mac laptop, plug in your phone and it will open in iTunes and you might be able to fix it that way, it’s supposed to be able to. Or check this link to this discussion : iphone is frozen with apple icon on screen - Apple Community

We followed Axel Foley's posting:

https://discussions.apple.com/thread/254574536?sortBy=best

It fixed the problem on our iPhone 12 after upgrading to 17.2.1

The screen was frozen, so we could not unlock the phone.

The important step is the step in BOLD (see below).

Thank you Axel!!!

Axel Foley

User level:Level 10

Posted on Jan 21, 2023 2:27 AM

1) Try and Force Restart your iPhone EXACTLY as shown below and see whether that resolves the issue:

Press and quickly release Volume UP button

Press and quickly release Volume DOWN button

Press and Hold the SIDE button until an Apple logo appears and then release the Side button (Can take up to 20 seconds. (DO NOT release Side Button when invited to Slide Power OFF).

1) Try and Force Restart your iPhone EXACTLY as shown below and see whether that resolves the issue:

Press and quickly release Volume UP button

Press and quickly release Volume DOWN button

Press and Hold the SIDE button until an Apple logo appears and then release the Side button (Can take up to 20 seconds. (DO NOT release Side Button when invited to Slide Power OFF).

Credit goes to Axel Foley

https://discussions.apple.com/thread/254574536?sortBy=best

Axel Foley

User level:Level 10

Posted on Jan 21, 2023 2:27 AM

After updating with IOS 17.2.1, I am facing following issues:

1. My contact search functionality is not working / taking long time to search .
2. My Apple 13 pro max is getting very slow
3. The sound level for new mail, messages itself is getting changed .

pls suggest / recommend.

• Press and quickly release VOLUME UP

     then

• Press and quickly release VOLUME DOWN

     then

• Hold the SIDE button until an Apple logo appears (15-30 seconds), ignoring "slide to power off" if it appears

The operative word here is QUICKLY; and try it a couple of times, the timing is a little tricky. If done correctly this will always work unless the phone has a hardware problem. 

iPhone 13, iOS 17.2.1 broke my cellular connectivity. Had the triangle with exclamation in top right corner.

I had exhausted all options:

• Reset the network settings
• Set the APN manually
• Restart iPhone
• Enable/Disable flight mode
• Software is up to date (17.2.1)
• Set the device roaming to home/automatic
• Changing between 5G Auto/5G On/4G
• Even requested a new SIM card from my provider (Sky Mobile UK)

Interestingly, I was abroad for work last week (Amsterdam, Porto) and had no issues roaming with other providers.

After reading this thread I have now:

• Deleted any VPN profiles
• Deleted my VPN App (NordVPN)
• Reset the network settings

So far it has been stable for 24 hours with no drops in cellular connectivity.

This workaround seems to get tethering to work via a usb cable on the Mac for me.

The issue seems to be related to IPv4 DHCP address negotiation that arbitrarily fails between the iPhone and the Mac. When it fails, the Mac self-assignes a 169.254.x.x address, which is useless for tethering.

1. On the Mac, open System Settings and search for Network.
2. In the Network panel, click on the ellipsis (...) at the bottom right.
3. Under Locations, choose 'edit locations'.
4. Click + to add a new location. The name you choose is arbitrary. I just leave it as 'untitled'.
5. Click 'Done'
6. Now click on the ellipsis again, choose locations, and select the new location's profile as the active location. Everything should start working again at this point - for awhile.
7. When it stops working, repeat the process and add a second location ('untitled2') and select that one as the active location profile.
8. After that, each time it quits working, just toggle back and forth between the two locations and like magic it all starts working again.

Hope this helps. Your mileage may vary.

Immediately after installing this update (17.2.1) my iphone 13 cannot detect the sim. I can use wifi but not the sim. If I use the same sim in another phone it works

I had to do this for my IPhone to connect to the internet. Turned the VPN off and it popped back on, I now can get on the internet. Hope this helps

Do you mean cellular network or Wi-Fi? And what is the error message?

In either case, if you are using VPN delete the VPN profile and app.

I just had the same issue, after turning off my VPN it now works. This may indicate that they want every detail of your mobile usage.

Cause due to the business VPN installed.

Uninstalled VPN now it's working

I have the same problem on my13. It over heated once and now you have to reset the i found after a while if you want to use the network. No matter cellular or wifi.

Same here. Had uninstalled my VPN app and still am getting bounced off the T - Mobile cell network, and WiFi networks. And phone doesn’t remember WiFi passwords when I return.

I have issues with touch screen snoozing, clicking on phone calls. The standby clock no longer appears which I was getting used to ….disappointing