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How to solve the problem of iPhone being unable to make calls and surf the Internet after upgrading to iOS 17.2.1?

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Release: 2024-01-09 11:42:07
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Apple’s latest iOS version is 17.2.1, released two weeks ago. This official version, internal version number 21C66, focuses on fixing some important bugs and solving the problem of battery draining too quickly in some cases.

iPhone升级iOS 17.2.1出现无法接打电话、蜂窝上网的情况,如何修复?

Although iOS 17.2.1 is only a small update, it prepares you for the upcoming iOS 17.3. Many old users, such as iPhone SE 2, iPhone 12 and iPhone 11, said that their battery life improved after upgrading. Sadly, however, some iPhone users are experiencing cellular connectivity issues after two weeks of use.

According to user feedback from the Apple community, after upgrading to iOS 17.2.1, users found that they were unable to connect to the operator's signal, resulting in the inability to conduct phone communications or use cellular network traffic. This issue mainly affects the iPhone 15 series models.

After upgrading to iOS 17.2.1, I was unable to receive calls, reset the phone while using cellular Internet, contacted its service provider, and changed the SIM card, including restoring it to factory settings, but none of these solved the problem.

iPhone升级iOS 17.2.1出现无法接打电话、蜂窝上网的情况,如何修复?

Currently, more than 383 users have voted "Me Too" on this post. Some users have contacted their service providers and changed their SIM cards, but this cannot solve the problem.

Users who encountered this problem contacted Apple’s official after-sales personnel but did not receive relevant help. And according to reports, some users have reported that iOS 17.2.1 can cause iPhones to overheat.

What should I do if I can’t make calls or use cellular Internet after upgrading to iOS 17.2.1?

If you are currently facing the problem of being unable to make calls or use cellular Internet after upgrading to iOS 17.2.1, the editor recommends first using the Apple mobile phone repair tool to repair the system. This software supports repairing 150 iOS system problems.

Repair process:

Step 1: Download and install the tool, and connect the device to the computer through a data cable. After the connection is successful, the software will automatically identify the computer. Click "Fix iOS system problems".

iPhone升级iOS 17.2.1出现无法接打电话、蜂窝上网的情况,如何修复?

Then select "Standard Repair" and click to download the firmware. The software provides the latest version of iOS system firmware by default.

iPhone升级iOS 17.2.1出现无法接打电话、蜂窝上网的情况,如何修复?

Step 2: After the firmware download is successful, click "Start Repair" to upgrade. The iPhone will automatically start the device after upgrading.

iPhone升级iOS 17.2.1出现无法接打电话、蜂窝上网的情况,如何修复?

Step 3: Wait for the repair to be completed. The entire upgrade process takes about 10 minutes. Be careful not to disconnect the data cable during the operation. Just display "Repair Complete".

iPhone升级iOS 17.2.1出现无法接打电话、蜂窝上网的情况,如何修复?

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