iOS 14.2.1 is finally here, iPhone 12 users must be upgraded!

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iOS 14

Since the launch of the iPhone 12, a large number of users have reported that the new phone has many problems, such as the loss of cellular network connection for dual-SIM devices, and the touch failure of the lock screen. Apple officials also publicly acknowledged that Made for iPhone hearing aids have audio quality problems when used on the iPhone 12 series.

iOS 14

This is not just today, Apple officially released the iOS 14.2.1 update, targeted to solve the above problems. For iPhone 12 mobile phone users, this can be said to have to be updated.

This iOS 14.2.1 update solves these problems, such as the inability to receive some MMS; while listening to iPhone audio, the Made for iPhone hearing aid device has sound quality problems.

In addition, the new update also solves the problem that the lock screen on the iPhone 12 mini does not respond. At the same time, some dual-SIM devices may lose their cellular network connection.

The repaired content is as follows:

  1. Fixed the problem that some MMS may not be received;
  2. Fixed possible sound quality problems of Made for iPhone (MFI) hearing aids when listening to iPhone audio;
  3. Fixed the problem that the lock screen on iPhone 12 mini may not respond;
  4. Fixed the issue that some dual SIM card devices could not connect to the cellular network.

It is also worth mentioning today that Apple has not repaired the “green screen” issue that has a wide impact on the iPhone 12 series in this version. Apple may still be investigating this series of issues and is expected to be fixed in a subsequent version.

By the way, according to the actual measurement of netizens, there is a probability that the screen of the four new iPhones in the specific software will have the problem of green screen, and the probability of the problem is actually related to the screen supplier.

According to the inquiry, this time Apple mixed the iPhone12 screen, the supplier is not only Samsung, but also LG, and the screen is divided into five levels.

G9N (Samsung screen): The best screen in the iPhone12 series, with the lowest green chance.

G9P (Samsung screen): A poor Samsung screen, some of which appear green or the whole screen is slightly green.

G9Q (Samsung screen): Better than G9P.

GVC (LG screen): LG’s best screen, a small part of it turns green.

GH (LG screen): LG’s relatively general screen, the most likely to appear green screen, the probability is 50%.

It can be seen that the LG screen at the beginning of GH has the greatest chance of overturning, while the Samsung G9N screen has the least chance. Some netizens asked Apple’s customer service to get the answer that there is no problem with the hardware, waiting for the later system repair. Of course, if you really can’t stand the green screen, you can also replace or return your iPhone 12 within the time limit for unreasonable return. If the time has passed, you can only wait until Apple repairs it later.

In fact, screen mixing is not only the case of Apple, Huawei, Xiaomi, etc. have this operation, mainly because it is difficult for a single screen supplier to meet the supply needs of mobile phone manufacturers, so as long as Apple audits, it meets the iPhone screen specifications and standards That’s it.

iOS 14

In addition, iPhone12 saves the green screen problem detection method, open general, wallpaper, static wallpaper, select pure black, then adjust the brightness to about half, and view it in a dark environment. The reason for the green screen of some Apple iPhone 12 mobile phone users is that the iPhone 12 screen is a mixed screen, among them Samsung and LG, the green screen is the LG screen.

We can also query the screen information used by the iPhone through tools such as Aisi Assistant. The screen code displayed by Samsung is G9N/G9P, and the screen code of LG Display is GVC/GH. According to some bloggers, G9N> GVC ≈ G9P> GH. The current panel detected as GH does have a very high percentage of green screens, but it cannot be confirmed.

The green screen is especially noticeable when reading night mode novels at night, which can affect reading in some cases. The previous Huawei mate20 Pro mobile phone green screen incident (also used LG’s screen), the final result is that as long as it is officially detected, if there is indeed a green screen phenomenon, it will directly help the user to replace it with a new phone without reason. Until green.

In addition, the official version of iOS 14.2.1 can now go directly to “Settings”-“General”-“Software Update” for OTA update. If you are an iPhone 12 series model, it is recommended to upgrade to this version.

Before that, quite a lot of new iPhone 12 mini users reported the sensitivity of the lock screen after receiving the phone, which also attracted Apple’s attention.

Specifically, when most users use their thumbs to slide up from the bottom of the lock screen to unlock the device, or when they press the flashlight or camera button on the lock screen, the display does not always recognize the press or slide up to unlock. It seems better to use other fingers, and once the iPhone 12 mini is unlocked, the sensitivity problem will disappear.

From the update point of view, the above problems are all at the software level, which also relieves the corresponding owners a lot.

In addition to the official version of iOS14.2.1, Apple also released the macOS Big Sur 11.0.1 version today. The updated version number is 20B50, which fixes the old Mac’s failure to install the new system and security issues.

iPhone 12

Earlier, Apple also launched iOS 14.3beta2, which brought ProRAW format specifically to the two iPhone 12 Pro series phones. Also leaked some new products, including Airtags, and new headphones Airpods Studio. Both products are expected to be released during Christmas.

Not only that, DxOMark announced a self-portrait evaluation of Apple’s iPhone 12 Pro, with a total score of 98, including a score of 101 for photos and 93 for video. It is only seventh on the DxOMark selfie list, with Huawei Mate 40 Pro (104 points), Huawei P40 Pro, ASUS ZenFone 7 Pro, Samsung Galaxy S20 Ultra 5G, Huawei nova 65G, Samsung Galaxy Note 10+ 5G in front of it.

DxOMark commented that the overall performance of the iPhone 12 Pro’s selfies is fairly stable. The exposure is roughly accurate, but the dynamic range is slightly insufficient. The color rendering of skin tones is good, but occasional color casts appear. The details are rich, but the noise is more than ideal. The ToF sensor can simulate a good bokeh effect.

In addition, it is worth noting that iOS 14.2.1 is only applicable to iPhone 12 mini, iPhone 12, iPhone 12 Pro, and iPhone 12 Pro Max, that is, only four new iPhones can be upgraded to iOS 14.2.1.

Mingmei Wuxian recommends that iPhone 12 users keep the system software and application software updated at all times. Usually new iPhones will encounter problems like this after they are listed, but most of the problems can be solved by software updates. Keeping the software updated can get a more stable experience. .

The implication is that, like the screen touch failure encountered by the iPhone 12 mini, the green screen of the iPhone 12 series is also a software-level problem. The confirmation of the cause of the problem undoubtedly relieves some owners, which means that in the next step The green screen issue will be resolved in the system update.

Finally, what Mingmei Wuxian wants to say is: this update comes in a relatively timely manner. Compared to previous controversies about product strength, quality control issues have recently successfully pushed Apple to the forefront. Not only did the “green screen” issue cause a serious impact on the reputation of the entire series, Tencent Security also discovered security loopholes in the iPhone 12 series. Therefore, it is absolutely necessary for Apple to promptly push the new version of the system to check for leaks and fill vacancies.

In recent years, there have been many bugs in iOS 11, macOS Catalina, etc. at the beginning of the release, which not only affects the system upgrade experience of old users, but also affects the desire of potential new users to purchase the machine to a certain extent. Therefore, this year Apple is releasing The new system was especially cautious and long-term debugging was carried out. As Apple is currently pushing Apple Silicon, it may further optimize the connection at the hardware level in the future to improve user experience and freedom of use.


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