Iphone 12 has no network.

Recently, many users reported that their iPhone could not connect to the network after upgrading to iOS 12. 1.2.

It seems that since iOS 12. 1, there have been various minor problems about the network, and Apple is constantly fixing them. Unfortunately, it's not as useful as X. Specifically, the article that poked my sister yesterday: iOS 12. 1.2 broke a bug, and there was no signal when the network was disconnected!

These network problems are embodied as follows:

Unable to use LTE call.

Unable to send or receive SMS.

no signal

The application cannot connect to the Internet.

Recently, zollotech, a foreign media, gave a temporary solution to these problems.

First, disable Wi-Fi calling in Settings-Cellular Mobile Network (there is no such option in China, so it can be ignored).

If the problem is still not solved, go to "Enable 4G" in "Cellular Mobile Data Options" and change the "Voice and Data" option to "Data Only".

This is just a stopgap measure. Apple has not responded to this question yet, but it has pushed the beta version of iOS 12. 1.3. I believe that Apple will fix this problem in the next version.

If you want to upgrade to the beta version, you can download the complete firmware package from the registered developer account of Apple developer official website, or directly reply to the keyword upgrade OTA in the background of Aibo Technology.

IOS 12 beta description file

Reply "iOS 12" in the background of Aibo Technology to get the developer's version description file, and restart the phone after installation to receive the beta update.

Ordinary users are not recommended to use host upgrade. If you really want to try, remember to back up before upgrading.