What is the reason why iPhone fingerprint unlock does not work?

1. If the phone has been jailbroken, then you can connect the phone to the assistant software on the computer, such as 91 Assistant, PP Assistant and Aisi Assistant, etc., click File Management, find the private var keychains file in the directory and delete it, then restart the phone to clear the lock screen password.

2. The mobile phone without jailbreak can only reinstall the system by connecting iTunes, the method is as follows: the computer side** a latest version of iTunes, open it after installation, connect the mobile phone, turn off the mobile phone, and then press and hold the power on and off button and the home button at the same time, when you see the white Apple logo, please release the power on and off button, and continue to hold down the home button;

3. Until you see the device in the DFU state on the computer, after the computer prompts, release the home button, click the OK recovery button on iTunes, and click confirm the recovery in the pop-up selection box (some lock screen phones cannot click the recovery button to recover, and reinstalling and clearing the screen passcode through DFU recovery mode will be more thorough and less prone to errors);

4. After pressing OK to restore, iTunes will pop up a page prompting that everything will be erased, and the recovery will be verified with Apple servers. Click the OK button, iTunes will automatically ** firmware, when the verification and extraction of files are completed, iTunes will automatically reinstall the ** good firmware version for the phone, wait for the installation to be successful and reactivate the phone.

Apple canceled fingerprinting for the following reasons:

1. Fingerprint unlocking takes up too much space and does not conform to the beauty of the design. Now is the era of full screen, the higher the front screen-to-body ratio, the better, and iPhones have always liked to set fingerprint unlocking on the home button. Now, due to the impact of the trend of full-screen mobile phones, the home button of the iPhone mobile phone has been canceled.

2. Apple's technical self-confidence. Many domestic mobile phone manufacturers are also fingerprint unlocking and face unlocking dual support solutions under the trend of face unlocking in the epidemic, few mobile phone manufacturers dare not directly do not want fingerprint unlock only support face unlocking, but Apple is very confident in face unlocking.

3. Face unlocking is more convenient than fingerprint unlocking. This point is for iphone mobile phones, I believe that there are many iphone mobile phone users have experienced the speed and accuracy of iphone face unlocking, take it out of your pocket - automatically turn on the screen - unlock, the whole process is done in one go, both the unlocking speed and the unlocking accuracy are very fast.

4. The number of reservations for the iPhone 12 series proves the acceptance of face unlocking. The number of reservations for the iPhone12 series on JD.com's self-operated e-commerce platform alone has approached 1.5 million, which is enough to see the popularity of the iPhone12 series, and it also shows that iPhone users recognize that iPhones only support face unlocking, and they don't care whether there is a fingerprint unrolling mold lock or can assist in unlocking.

History of the development of the iPhone of the iPhone:

In 2004, Apple gathered more than 1,000 in-house employees to form a team to develop the iPhone, and began a project that was classified as highly secret, called "Project Purple", including Jonathan Ive, the designer behind the iPhone. At the time, Apple's CEO, Steve Jobs, shifted from tablets with a focus such as the iPad to a mobile phone.

Apple secretly partnered with AT to create some hardware and software devices—the then Cingular wireless network—and gave Apple investment and a lot of freedom, in exchange for which Apple guaranteed that the iPhone would be sold exclusively in the United States within four years.

Apple started the iPhone development program under the codename "Purple 2", and at a time when Nintendo's NDS was beginning to gain popularity, it was clear that design elements such as multi-touch for the iPhone were also affected.

First of all, you can restart the phone to rule out whether it is caused by a system problem? If it is still not possible to serve the mu after restarting, it is recommended that the landlord directly send the slag to the after-sales service to detect whether there is a problem with the fingerprint recognition module? As a result, there is no way to use it normally.

Hello dear! We'll be happy to answer for you. Why can't Apple phones suddenly unlock with fingerprintsA:

Hello, dear, 1. It may be that the fingerprint recognition is not sensitive after restarting the phone: after the Apple phone is restarted and booted, the fingerprint unlock cannot be used to unlock the system for the first time, and you need to enter the screen password once to enter the system, and then you can unlock the fingerprint. 2. It may be that the home button of the mobile phone or the fingers are not clean:

Since Apple's home button or fingers have sweat or stains, it will affect the sensitivity of the phone's fingerprint recognition, it is recommended to check whether there is dust, sweat or other unclean ground on the fingers and home button, and wipe it to solve it. 3. It may be that the finger position is not corrected: when using the fingerprint recognition of the Apple mobile phone, if the finger position is not accurate or corrected or the finger placement is very different from the previous fingerprint entry, it will affect the sensitivity of fingerprint recognition to a certain extent, and it is recommended to adjust the finger position to solve the problem.

4. It may be a system problem that causes the fingerprint recognition setting to be incorrect: if there are components associated with fingerprint recognition in the system, if the components are damaged, the fingerprint recognition function will also be affected. It is recommended that after restarting or resetting the system, delete the original fingerprint and re-enter the new fingerprint information.

The above is my full reply, if you are satisfied with my service, please give a thumbs up, and I wish you all the best! Peace and joy!

The handling method in the case of Apple mobile phone fingerprint unlock cannot be used is as follows:

After the Apple mobile phone is permanent, often fingerprint recognition is not sensitive, in fact, one reason may be that there is a problem with your fingerprint settings, in general, fingerprints need to be re-entered once every 2 or 3 months.

On the main page of your phone, enter the [Settings] option, as shown in the figure below.

After entering the [Settings] option, select the [Touch ID & Passcode] settings.

After entering [Touch ID & Password], delete the previously entered fingerprint, and click [Add Fingerprint].

In the process of entering fingerprints, make sure that there are no stains on the home button, which can be wiped with a paper towel, and there can be no stains on the hands, which are all ways to improve fingerprint recognition.

After successful entry, the player will touch the recorded fingerprint directly on the home button, as shown in the figure below, a black stripe will appear, indicating that the fingerprint has been entered successfully and is valid.

Check the fingerprint recognition and no dirt, water stains, wipe clean and try to unlock again, if it still does not recognize, you can restart and try again, if it still cannot be unlocked, it is recommended to re-enter the fingerprint, the angle is changeable, easy to identify.

1. Fingerprint ID fails after restarting your iPhone.

It is normal for the fingerprint ID (Touch ID) to fail after the iPhone is restarted, which is one of the most common reasons for the failure of fingerprint recognition.

This is mainly designed by Apple for the security of the user's mobile phone, the fingerprint identification system of the iPhone Touch ID does not store the user's fingerprint information, but the fingerprint information is converted into digitization and stored in the chip of the iPhone. This part of the chip is protected by encryption, and only your fingerprint and password can be activated before it can be used.

In other words, when your iPhone is restarted, the fingerprint information in the chip-protected Touch ID is isolated and not activated. It can only be used by enabling it with a numeric passcode.

Solution: If the iPhone6 fingerprint recognition does not work after restarting, you only need to enter your digital password once to use it, which is also a protection mechanism.

2. The iPhone has not been unlocked after more than 48 hours of locking the screen, or when the user has set the relevant settings for "Touch ID and Password" in "Settings".

In this case, it is normal if the iPhone6 fingerprint recognition is not sensitive.

Solution: You only need to enter the numeric password once to solve the problem.

3. The iOS system version causes the iPhone fingerprint recognition to fail.

It's hard to say that this problem is due to a system bug or other reasons.

Solution: Upgrade to the latest version of the iOS system, the new version of the system can fix a lot of bugs and bugs, you can try it.

4. The effect of water on iPhone fingerprint recognition.

1. There is a problem with the fingerprint input, which causes the fingerprint to be inconsistent with the fingerprint stored in the A7 chip, resulting in unlocking failure.

1. There is a problem with the home button and related parts of the iPhone6 Plus, and the fingerprint cannot be scanned correctly.

2. Fingers with sweat or powder, or oily fingers. It causes an error in scanning the fingerprint, because the iPhone6 Plus is a capacitive fingerprint unlock, which has this drawback.

3. Finger injuries have left scars.

4. The unlocked finger is not the same as the finger you entered before.

5. It may be that the fingerprint is too shallow.

Second, there is a problem with the stored fingerprint sample.

1. Whether the entered fingerprint has been damaged (it may be software or hardware damage).

2. The fingerprint identification sample is not standard when entering, and the fingers are oily or wet, resulting in a mismatch of fingerprints when unlocking.

Part 2, Precautions when entering fingerprints:

1. Keep your fingers dry when entering fingerprints.

2. Fingerprints are entered on both the left and right hands.

3. When unlocking, if your fingers are wet, or there are food crumbs sticking to them, or your fingers are very oily, wipe your fingers dry with a paper towel, which can greatly improve the success rate of fingerprint unlocking.