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What if I don’t respond when I use Tap Back on iPhone?

After upgrading your device to iOS 14 or later, you can open Control Center, take screenshots, trigger actions specific to accessibility, and more with two or three quick taps on the back of your iPhone. If you are experiencing problems, such as a tap on the back not triggering an action, you can refer to the following information.

  1. iPhone 8 or later models support “Tap Back” feature, please check if your model supports it.
  2. Go to Settings – Accessibility – Touch, check whether the “Tap Back” setting has selected the corresponding operation, if you choose the Quick Command operation, you can go to the “Quick Command” application to check and try whether the command can be successfully triggered.
  3. According to some users’ feedback, tapping the middle of the back of iPhone will be easier to trigger. If that doesn’t work, try tapping the back of your iPhone with a little bit of force.
  4. If your phone is wearing a thicker case, you can try to remove the case and then try the “tap on the back” feature.
  5. If it still doesn’t work, try updating your iPhone to the latest official version after backing up your data.
What if I don't respond when I use Tap Back on iPhone?

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When will iPhone 13 be released? What will be the big upgrades?

If there is no accident, iPhone 13 will be released in September 2021. Although there is still a long time before the release, but the fruit fans have long been looking forward to on.

According to early rumors and leaks, iPhone 13 will have big upgrades in the following seven areas, take a look, which may make many consumers feel excited.

1.smaller “bangs”

Since the release of the iPhone X, the notch on the screen has been criticized, but this notch is integrated with the extremely important deep camera, face recognition function mainly through this notch to achieve. According to Ice Universe, the iPhone 13 will continue to use this “bangs” design, but it will finally be smaller.

2.iPhone 13 will use 120Hz refresh rate screen

iPhone 13 will be the first iPhone with 120Hz refresh rate screen, which will make the screen slide more smoothly, for video playback and game content will improve significantly. This view comes from Apple analyst Jon Prosser and display analyst Ross Young.

Thanks to LTPO technology, the display should be able to scale from 120Hz all the way down to 1Hz depending on what’s on the screen, which will help save battery life. However, according to Elec, only two models are expected to get 120Hz LTPO displays, which, according to Apple’s current product plans, could mean the iPhone 13 Pro and iPhone 13 Pro Max.

When will iPhone 13 be released? What will be the big upgrades?

3.the main camera upgrade

While it looks like the more powerful periscope zoom lens may not be available until 2022 when the iPhone 14 is released, some other camera upgrades for the iPhone 13 look promising, according to the reveal. First, the iPhone 13 will reportedly feature an improved ultra-wide angle lens with a 6-blade lens set and an f/1.8 aperture. This will be an improvement over the iPhone 12’s f/2.4, 5-blade lens and will work better in low light.

In addition, analyst Ross Young expects the iPhone 13 Pro and iPhone 13 Pro Max to come with larger sensors, again letting in more light. According to analyst Ming-Chi Kuo, the iPhone 12 Pro Max comes with an advanced sensor shift stabilization device that will be used on the iPhone 13 Pro and iPhone 13 Pro Max.

4.WiFi performance upgrade

iPhone 13 will support WiFi 6E standard, this standard can provide faster wireless network speed, Barclays analysts report that iPhone 13 will support Wi-Fi 6E in the 6GHz band. this will reduce interference with other devices in the home.

When will iPhone 13 be released? What will be the big upgrades?

In addition to faster Internet speeds, Wi-Fi 6E supports lower latency, which should also result in better performance. In addition, Wi-Fi 6E devices can use 160MHz for high-bandwidth activities such as augmented reality. Broadcom, the maker of the mobile Wi-Fi 6E chip, called the 6GHz band “the most disruptive boon to Wi-Fi users in the last 20 years.

5.Touch ID returns

The iPhone 13 could be the first new iPhone in years to actually support Touch ID. analyst Ming-Chi Kuo says Apple is working on an iPhone with both Face ID and under-screen fingerprint scanning capabilities, which is expected to launch in 2021. However, this feature may only be available for the iPhone 13 Pro and iPhone 13 Pro Max.

The analyst also said that Apple is working on an iPhone with Touch ID integrated into the power button. this won’t be the flagship device, but it’s not sure right now if this refers to the regular iPhone 13 or iPhone 13 mini, or the new iPhone SE 3 or iPhone SE Plus.

Re-enabling Touch ID on the iPhone 13 makes sense, and it’s foreseeable that masks will still be required in public places in 2021, but Face ID doesn’t work well with masks.

6.Longer battery life

The iPhone 12 is the first iPhone to support 5G networks, which places higher demands on battery life. The good news is that according to Apple’s own documents, Apple will upgrade Qualcomm’s 7nm X55 modem to a newer, more efficient 5nm X60 modem.

When will iPhone 13 be released? What will be the big upgrades?

The X60 can be integrated directly into the phone’s chipset, which should help reduce space footprint while reducing battery consumption. In addition, the X60 can support both millimeter wave and network bands below 6ghz, resulting in faster speeds.

Seven, iPhone 13 will be fully equipped with laser sensors

On the iPhone 12 Pro and iPhone 12 Pro Max, the laser sensor provides better autofocus performance, while also allowing portraits to be taken in very low light. The laser sensor also offers better augmented reality performance as it can help create 3D maps of rooms faster.

According to the Electronic Times, all four iPhone 13 models will get the laser sensor or TOF sensor feature. As a result, this feature will no longer be exclusive to the highest-end iPhones. The report says the new ToF sensor will enable “instant immersive augmented reality experiences”. So far, we’ve seen some pretty cool iPhone AR applications, but none of them have been widely accepted by the market.

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At this stage, buy iPhone 11 or iPhone 12?

The choice of Internet products is diversified, at this stage, is it better to buy iPhone 11 or iPhone 12?

iPhone 11 and iPhone 12 have performed amazingly in different years respectively. Relevant information shows that after Apple released the iPhone 12 series of products so far, the new models have accounted for 76% of the total iPhone sales in the U.S. market. And among the four new models, iPhone 12 mini, iPhone 12, iPhone 12 Pro and iPhone 12 Pro Max, iPhone 12 is the best seller, accounting for 27% of total iPhone sales. And in the period following Apple’s 2019 release of the iPhone 11 lineup, the new models accounted for 69% of total iPhone sales. In contrast, the four iPhone 12 models fared better, accounting for 76 percent of sales, but there was no clear leader among these new models, with iPhone 12, iPhone 12 Pro and iPhone 12 Max sales being roughly equal. And in 2019, the iPhone 11 accounted for a whopping 39% of total sales, with the iPhone 11 Pro and Pro Max combined accounting for just 30%.

How to choose is indeed a dilemma!

From the perspective of practicality and value for money, and from the perspective of a dual-holder iPhone and Android user, I think it’s still the iPhone 11 that’s better.


First of all, the price, although this year’s iPhone 12 compared to the price of the previous sale, compared to the previous years of the iPhone slightly down. But after all, iPhone 12 is still the new flagship phone of Apple in 2020, and in contrast, iPhone 11 as the previous generation of Apple models in the major platforms, its price has fallen to a more acceptable point, so for the more price-sensitive users, iPhone 11 may be able to provide a more accessible price range.

At this stage, buy iPhone 11 or iPhone 12?

Second is the performance, Apple’s own a series processing chip, whether this generation or the previous generation, according to the relevant scoring software, such as Geekbanch, 3D mark data results, IPhone 11 on the A13 processing chip used, the chip has 8.5 billion transistors. Still can be in the world today in the first echelon of the level.

At this stage, buy iPhone 11 or iPhone 12?

In general, the iPhone with its powerful A-series processor chip, hard iOS tuning, and through a combination of hardware and software, whether admitted or not, the iPhone performance experience is still the first tier among cell phone manufacturers. So buying iPhone 11 does not require too much worry about cell phone performance, game experience, etc., to intuitively affect the user’s actual performance experience related factors.

Next is the imaging system part, iPhone 11 rear two cameras, respectively: 12 megapixel ultra-wide angle and wide angle ultra-wide angle: /2.4 aperture and 120 ° angle of view, wide angle: /1.8 aperture, 2 times optical zoom (narrowing), up to 5 times digital zoom. Plus fusion, the concept of computational photography is proposed, still able to meet the needs of everyday photography.

The biggest difference between the iPhone 11 and iPhone 12 is whether you want to experience the new web surfing experience that 5G brings you. However, even though it has crossed into 2021 today, the base station coverage of 5G has been extensive enough, but in the suburbs of the city and some of the less economically developed areas, the relevant network coverage has not yet reached the point where it is as pervasive as 4G.

And at this stage, the 4G online experience is still able to meet the needs of most users for video, chat and games. If you are not willing to pursue higher internet speed at a greater cost, then I think the 4G-enabled iPhone 11 may be your best choice.

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Why does iPhone 12 automatically shut down in winter?

With the onset of the cold snap, some users are experiencing a situation where the phone automatically shuts down even when there is sufficient power after the temperature gets cold. Is this normal? Does it have an effect on the phone?

According to Apple’s website, it is officially recommended that iOS devices be used in environments with temperatures between 0ºC and 35ºC. Low or high temperature environments may cause the device to change its behavior to regulate its own temperature. Using your iOS device in cold environments below the operating temperature range may temporarily reduce battery life and may cause the device to shut down. When you return your device to a warmer environment, battery life will return to normal.

Why does iPhone 12 automatically shut down in winter?

Therefore, if the phone is frozen off outdoors and taken back to a warm room for charging, the battery life will return to normal and there will be no effect on the device. Still, you need to avoid such situations and reduce or avoid using your phone outdoors in cold weather.

Of course, if your device turns off automatically even when the temperature is not very low, then there may be a hardware problem that needs to be serviced promptly.

In addition, if you are using your iPad, you may encounter a situation where your iPad does not charge properly in winter.

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What’s the difference between the LiDAR lens and the ToF lens on iPhone 12 Pro?

When it comes to estimating object distance and recording depth information, many Android manufacturers have equipped ToF (Time-of-Flight) sensors on some of their models to achieve these two functions.

For example, the P40 Pro has a 3D depth-sensing camera (ToF) that can deeply sense the depth information of objects to achieve a blockbuster-like depth-of-field effect. Currently, some cell phone manufacturers mostly use iToF (indirect time-of-flight sensor), while LiDAR belongs to dTof (direct time-of-flight sensor). iToF and LiDAR are both ToF, but the difference is not small.

First, the “signal” sent out is different.

The iToF emits a light signal that is modulated by a sinusoidal wave and has a regular shift in intensity between light and dark.

What's the difference between the LiDAR lens and the ToF lens on iPhone 12 Pro?

Second, the principle of distance estimation is different.

LiDAR is a direct measurement of distance by laser.

Third, the accuracy range, measurement rate, and anti-interference capability are different.

The iToF signal is easily interfered with, and the accuracy of the measurement decreases as the distance gets farther, and the measurement is relatively slow.

What's the difference between the LiDAR lens and the ToF lens on iPhone 12 Pro?

LiDAR’s laser beam is highly resistant to interference, and theoretically the accuracy of the measurement does not decrease with distance, and the measurement is faster and more suitable for long-distance ranging.

Finally, iToF is easier to miniaturize, while dToF is more difficult to integrate and miniaturize, so the two have more obvious differences in commercial scenarios. iToF is mostly used in cell phones, while dToF is more commonly used in large devices such as cars and drones.

LiDAR is faster, more accurate, and farther away than iToF, but it is more difficult and expensive to integrate. Apple must have put a lot of thought into integrating LiDAR into the iPhone 12 camera module.

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iOS 14 Tips: iPhone supports real-time voice translation

In iOS 14 and newer, Apple brings a new Translator app that provides real-time translation in 11 different languages. It supports Chinese, Arabic, English (US and UK), French, German, Italian, Japanese, Korean, Portuguese, Russian and Spanish translation.

The “Translate” app has a simple and functional interface that allows users to select the language to be translated at the top of the interface and then type (or paste) the text to be translated. In addition, the app supports real-time voice translation as follows.

  1. Enable the “Translate” app on your iPhone or iPad.
  2. Use the two buttons at the top to select the language you want to translate.
iOS 14 Tips: iPhone supports real-time voice translation
  1. Click the blue microphone button at the bottom of the screen and say what you want to translate. The translation will be displayed in large font, with the original phrase in black and the translation in blue.
iOS 14 Tips: iPhone supports real-time voice translation

4.To hear the translated voice, click the blue play button.

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How to restart Apple iPhone 12? iPhone 12 restart method tutorial

Apple iPhone 12 has a full-screen design, compared to the previous iPhone using fingerprint recognition Home button has a lot of different interactions, which makes many users from the iPhone 6S directly to the iPhone 12 a face mask, and even some individual users will not restart the iPhone 12.

The iPhone 12 is a new iPhone with a new screen, but the iPhone 12 is a new one.

How to restart Apple iPhone 12? iPhone 12 restart method tutorial

Here is the Apple iPhone 12 phone restart method tutorial.

1, the power button and volume “+” key at the same time long press, there will be a sliding shutdown prompt, so you can turn off the phone;

2, after the phone is completely shut down, long-press the power button for a few seconds, you can see the phone is restarted;

3.[Settings] – [General] – [Shutdown] within the phone, you can also turn the phone off;

4, call Siri, give the command “shutdown” can also be turned off the phone.

In addition, if the iPhone 12 is stuck and not working, you can also make a forced restart of the iPhone to solve the problem, as follows.

1, quickly press the iPhone 12 phone left side of the [volume +] button, and then quickly release;

2, and then quickly press the [Volume -] button on the left side of the iPhone 12 phone, and quickly release;

3.Finally, press and hold the iPhone 12 phone right side of the [shutdown button] until the Apple Logo appears on the phone screen, then release the hand to restart the iPhone 12.

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How does the iPhone’s single front-facing camera record depth-of-field information to take portrait mode photos?

When you check Apple’s support page, you’ll see that portrait mode, which is not supported by the iPhone 8, is supported by the new iPhone SE — even though both have only one rear lens and the specifications are exactly the same.

Normally, a phone would have to rely on dual cameras to take bokeh photos like “portrait mode” — like the human eye, where two lenses in different positions get two different angles of the image, then combine the difference in perspective to estimate the depth of field, thus achieving a bokeh background and keeping the subject clear. The Plus series on the list today, or the X, XS and 11 in recent years, basically rely on a multi-camera system to complete portrait bokeh shooting.

So how does the iPhone’s single front-facing camera work? At its core is the infrared dot projector in the Face ID system, which also captures accurate enough depth data to act as a “secondary lens”.

How does the iPhone's single front-facing camera record depth-of-field information to take portrait mode photos?

As for the new iPhone SE, because its sensor is too old, it can’t rely on the sensor to get the parallax map, and basically has to rely on the machine learning algorithm provided by the A13 Bionic chip to simulate and generate the depth data map.

The portrait bokeh photography achieved by the new iPhone SE is the limit of what a single camera phone can do by software optimization. Strictly speaking, this is also thanks to the A13 chip, if it did not bring the latest machine learning algorithms, relying on an outdated camera alone, the SE’s shooting experience obviously has to be a discount.

This is more or less proof that it still makes sense to develop a multi-camera system for smartphones. We can use ultra-wide-angle to widen the framing field, can rely on periscopic telephoto to obtain lossless zoom photos, not to mention ToF, LIDAR, and other “special lenses” to help AR augmented reality detection, these do not simply rely on an OTA upgrade, or algorithms can be achieved features.

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What is the problem with iPhone 12 network service dropping frequently?

According to the latest media reports, a number of iPhone 12 series users have given feedback that their phones are experiencing unexpected drops in network service (4G/5G).

The current situation is very common, both 4G and 5G have dropped lines.

What is the problem with iPhone 12 network service dropping frequently?

It should be noted that the situation is mainly concentrated in the United States users, there are users of Verizon carriers, but also AT&T, while the previous iPhone 11 Pro is not this problem.

Although the specific details are not yet clear, there is speculation that there is a problem with the new machine handling the switching of the transmitter tower, to which there is no response from Apple yet.

A number of users said that the iPhone 12 series, although the use of Qualcomm’s baseband, but the actual signal problems have been poor performance, and the phone lost the exact location of the network, but also let them very difficult.

In addition, some users said that after giving Apple technical support for help, they remotely installed two profiles on their phones “baseband” and “phone records can temporarily solve the problem.

Already, dropped calls have become a major problem for Apple’s iPhone, so how will Apple solve this next thing?

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What about the iPhone 12 wireless charging failure?

Description of the problem: iPhone 12 wireless charging does not work, put iPhone 12 on the wireless charger charging, can start charging, after a while it does not work, after restarting again can charge, repeated cycles.

Apple customer service remote inspection said the hardware is fine.

What about the iPhone 12 wireless charging failure?

Solution: iPhone 12 wireless charging malfunction, often can not be charged may be caused by the charger is not compatible.

Not all wireless chargers are unified standard, whether the wireless charger purchased is equipped with a plug, if not with a plug, but with their own, usually low wattage power adapter may not be able to sustain power, it is recommended to choose Apple’s official 12W and above power adapter or other brands of high-power power adapter.

In addition, the iPhone 12 wireless charging failure is also related to the following factors.

  1. iPhone is equipped with a thick protective case, metal case or battery shell, please try to remove the case or shell.

2, Do not place any objects between iPhone and charger. For example, the back of the iPhone paste metal ornaments, or finger ring buckle and any other things, which will affect the iPhone wireless charging.

  1. Make sure your iPhone is placed properly. Place your phone in the center of the charger or in the location recommended by the manufacturer. (The recommended method is to place it in the center of the wireless charger with the logo on the back of the iPhone.) Improper placement may also result in slow charging.
  2. If your iPhone vibrates (for example, when receiving a notification), the iPhone may shift. This may cause the charging station to stop providing power to iPhone. If this happens frequently, consider turning off the vibration feature, turning on Do Not Disturb mode, or using a case to prevent movement.
  3. If the phone overheats, or the wireless charger overheats, this may cause the iPhone to not charge.