Iphone 7 Plus Does Not Recognize Fingerprint

Iphone 7 Plus Does Not Recognize Fingerprint

Touch ID first started installing on iPhone 5s in 2013. Later, the scanner was equipped with the new iPhone, iPad and MacBook Pro models.

At the moment, there are 2 generations of sensors that are used in Apple technology:

1st generation Touch ID is used in:

  • iPhone 5s
  • iPhone 6/6 Plus;
  • iPhone SE
  • iPad Air 2;
  • iPad mini 3/4;
  • iPad Pro 12.9 ″ (first generation 2015 release);
  • iPad Pro 9.7 ″;
  • iPad 2017/2018.


The 2nd generation faster Touch ID is set to:

  • iPhone 6S / 6S Plus;
  • iPhone 7/7 Plus;
  • iPhone 8/8 Plus;
  • iPad Pro 10.5 ″;
  • iPad Pro 12.9 ″ (second generation 2017 release);
  • MacBook Pro 2016/2017.

Generations of sensors differ only in response speed, but not in the degree of fingerprint recognition. The features and tricks described below will work with Touch ID of both generations.

What affects the operation of Touch ID

The fingerprint sensor at the time of the appearance in the iPhone 5s was head and shoulders above the available solutions from competitors. The developers managed to create a device that correctly reads the fingerprint of the owner quite quickly and with high accuracy.

Two years later, the sensor was finalized, halving the response time of the sensor.

The operation of the sensor is definitely affected by contamination and liquids. Maximum accuracy is guaranteed with a clean sensor surface and the absence of grease, dirt and water on the finger. Despite this, the scanner requires daily cleaning only under very difficult operating conditions.

Most users do not need to wipe the Touch ID or wash and dry their hands before using the smartphone.

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What does not affect the operation of Touch ID

The sensor is not affected by ambient temperature or humidity. Even if you use the device in the cold, when the skin on the fingers is squeezed a little, a minor change in fingerprints will not have a serious impact on the operation of Touch ID.

The state of the smartphone’s battery and its charge level does not affect the response speed. Some users mistakenly believe that a sensor with a charged battery works better.

There is no confirmed evidence of the Touch ID learning system when repeatedly touching the sensor in the menu Settings. Touch ID and password improves the accuracy of the sensor. In this menu, this is intended only to indicate the entered fingerprint.

How then to increase the accuracy of Touch ID

The essence of the method is to add several fingerprints of one finger, but at different angles and in different positions. If the fingerprints of the wife / husband, children or relatives are not entered in the smartphone, you can score all five slots with your data.

Use either two fingerprints for a non-working hand and three for a working one, or four for a working one and one for a non-working one.

1. Go to Settings. Touch ID and password and delete existing fingerprints.

2. Now add a new fingerprint for the hand that most often hold the smartphone. When adding a fingerprint, try to press the top of the fingertip to the sensor.

3. Add another fingerprint and re-enter the same finger, but most of the touches are already the lower part of the fingertip.

4. Add the third fingerprint for the same finger, but at the same time, hold the smartphone not in your hand with an ordinary grip, but in the most familiar place, for example, removing the iPhone from your pocket.

5. Now you can add two fingerprints for the thumb of the second hand, or just one such fingerprint, and fix the last finger with your main finger in another atypical position, for example, by clicking on the smartphone in the car holder.

By adding two prints on one finger (one for the top of the pillow, and the second for the bottom), you can add a large area of ​​the skin to the memory of the device. When adding a fingerprint in a special position (taking it out of a pocket, in a holder or on a table), we teach the sensor to apply pressure widely at a certain angle.

This simple way will minimize the percentage of false positives of the Touch ID sensor.

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