How to upgrade ios 15 without a sim card? What models does the official version of ios 15 support?

The official versions of ios 15 and ipados 15 have been pushed one after another. Some users said that the signal of the mobile phone system has been enhanced, but many users have bugs after the update. Most of them just can't recognize the sim card, which is exactly the same as the failure when Apple updated the previous version of iOS 14.7. 1. But basically this situation can be repaired by forced restart. Let's take a look at the specific operation.

How to upgrade ios 15 without a sim card?

In this case, you can try to force a restart, which can solve most basic failures. Forced restart method:

Full-screen mode after iPhone8: Press the volume high and low keys quickly, and then press and hold the power button until you see the Apple logo.

IPhone 7, iPhone 7 Plus, etc. : Press and hold the top (or side) button and the volume down button at the same time until you see the Apple logo;

Models with Home button before iPhone7: Press and hold the Home button and the power button at the same time until you see the Apple logo.

What does ios 15 mean without a sim card?

Because this phenomenon is not a case, it is expected that there is a compatibility problem in iPhone 12 series and above, and iOS 15 leads to abnormal hardware recognition, so the mobile phone can only be restarted for re-recognition, so it is inferred that it is not a hardware damage problem. Moreover, this phenomenon is not the first time on Apple's mobile phone, such as the version of iOS 14.7. 1 released by Apple in the first half of the year.

According to analysis, this situation may be related to Apple's upgrade of iPhone baseband. Some areas are not compatible with the service network of the operator, resulting in the mobile phone being unable to identify the local operator's network. If it is a new mobile phone card or a recently replaced SIM card, the problem is not big. Restarting the phone can solve it. If the SIM card may affect the hardware identification, you can only replace it with a new SIM card to match the firmware. If you encounter similar problems, it is recommended to try to restart. If you still can't identify the network, you can contact Apple's customer service or business hall to replace the SIM card.

What models does the official version of ios 15 support?

IOS 15 compatible devices include: iPhone 13, iPhone 13 mini, iphone 13 Pro, iphone 13max, iphone 12mini, iPhone 12 Pro, iPhone 12 Pro Max、iPhone 1 1、iPhone 16438