touchscreen gestures

How to use the new fingerprint reader to unlock Galaxy S10, S10+, and S10e?

Samsung dramatically changed the fingerprint reader (fingerprint sensor) on Galaxy S10. An in-display ultrasonic fingerprint reader is used in Galaxy S10 and Galaxy S10+.

With the removal of Iris scanner on Galaxy S10, many owners will have to use the fingerprint scanner to quickly unlock Galaxy S10.

This Galaxy S10 how-to guide explains how to register fingerprints and use the fingerprint reader to unlock Galaxy S10, S10+, and S10e.

What’s new in Galaxy S10 fingerprint reader?

Galaxy S10 (and Galaxy S10+) is the first smartphone with an in-display ultrasonic fingerprint reader, which is one of the most notable new features of Galaxy S10.

Instead of scanning your fingerprint using capacitive or optical methods, ultrasonic fingerprint sensor uses sonic pulse waves to find out the 3D structure of your fingerprints.

Similar ultrasonic technology has been used in biomedical imaging in hospitals for decades and saved many lives.

Generally speaking, or technically, the ultrasonic fingerprint reader can get the real 3D info of your fingerprints and therefore it could potentially be far more accurate than the traditional capacitive fingerprint reader.

Do not confuse this in-display ultrasonic fingerprint reader with the in-display optical fingerprint ones (as in a few OnePlus and Vivo phones). The optical fingerprint reader is the slowest one. It is even slower than the traditional capacitive fingerprint reader. And the optical one is the least secure because it is essentially a kind of 2D photo recognition.

For Galaxy S10e, a traditional capacitive fingerprint sensor is mounted on the power button as illustrated in Galaxy S10 layout. The position is at least better than the fingerprint on Galaxy S8 (see Galaxy S8 layout) or S9 (see Galaxy S9 layout).

What are the major limitations of the in-display ultrasonic fingerprint reader on Galaxy S10 and S10+?

Although the in-display ultrasonic fingerprint sensor sounds cool and is actually the most secure (accurate) fingerprint reader, there are some inherent limitations of this new sensor on Galaxy S10:

Many screen protectors will not work nicely with the in-display fingerprint reader. The sonic waves are affected by the air between the screen and screen protector. Therefore the sensor may not function properly even if a small air bubble is trapped by the screen protector.
You need to know where to press your finger.
The matching sensitivity is not rocket science. If Samsung set the sensitivity too high, you may have to press several times. If it is set too low, it will not be secure.

So, as explained in the top 10 disappointing and missing features of Galaxy S10, I prefer the fingerprint sensor on Galaxy S10e.

How to register fingerprints for the fingerprinter reader on Galaxy S10?

To use the new fingerprint reader to unlock Galaxy S10, you need to register your fingerprints first.

The procedure of registering (adding) fingerprints is identical for all 4 Galaxy S10 phones. But in this guide, we will use Galaxy S10 for the illustration.

In Galaxy S10 Settings, tap Biometrics and security… Read the rest “How to use the new fingerprint reader to unlock Galaxy S10, S10+, and S10e?”

How to use Galaxy S10 touchscreen gestures on Galaxy S10, S10+, and S10e?

simon · Leave a Comment

Using Galaxy S10 touchscreen gestures is not an option; it is a requirement if you want to use Galaxy S10, S10+, or S10e.

The good news is that Galaxy S10 touchscreen gestures are similar to those on other smartphones.

This Galaxy S10 how-to guide uses animation to demonstrate how to use seven Galaxy S10 touchscreen gestures. The examples (scenarios) of using these Galaxy S10 touchscreen gestures are also provided.

The touchscreen gestures are identical on Galaxy S10, S10+, S10e, and S10 5G. So, in this guide, Galaxy S10 refers to all four models of Galaxy S10 phones.

What are the seven Galaxy S10 touchscreen gestures?

Unless you attach a keyboard/mouse to Galaxy S10 or use voice commands (e.g., Google Assistant or Bixby Voice), you have to use Galaxy S10 touchscreen gestures to control the screen and interact with the phone in apps.

Galaxy S10 touchscreen gestures refer to how your finger(s) moves on the screen.

The screen (see Galaxy S10 layout) in Galaxy S10 is a touchscreen. When your finger or a capacitive pen touches the screen, it can identify the motion.

The motion pattern can be designed and programmed as a gesture. The system and apps can then perform certain operations as a response to the gesture.

In Galaxy S10, as like in other Android phones, seven touchscreen gestures, tap, double tap, long tap (tap and hold), swipe, drag, pinch, and spread, are fully supported.

Galaxy S10 touchscreen gestures are used by:

The system. Galaxy S10 may use slightly different touchscreen gestures compared to other phones. For example, the navigation gesture is different from that in stock Android.
Individual apps. App developers can assign any functions to any gestures inside the app.

Please note S Pen is for Galaxy Note devices. Galaxy S10 screen will NOT respond to S Pen.

Very often, three of the Galaxy S10 touchscreen gestures were also programmed for some hardware buttons (keys). In this case, we usually refer the gestures as press (instead of tap), double press and long press.

List of Galaxy S10 touchscreen gestures their usages

We will use animations to illustrate what are the 7 Galaxy S10 touchscreen gestures. The examples of using each gesture are followed.

Smartphone touchscreen gestures usually mimic the behaviors of a mouse on a PC. When you use Samsung Dex with Galaxy S10, the mouse can replace these Galaxy S10 touchscreen gestures.

1. Tap gesture (press)

Tap (single tap) is one of the essential Galaxy S10 touchscreen gestures. You cannot survive without it.

The tap gesture, as shown in the animation below, means you touch somewhere (e..g., a button in an app, an app icon in Galaxy S10 home screen, or ) on the screen once, then your finger should move away from the screen

Corresponding to using a mouse, the tap gesture is simply the click.

The response of the tap gesture depends on what was tapped, or where you tapped.

Some example of using tap gesture on Galaxy S10 includes:

… Read the rest

Top 10 disappointing or missing features of Galaxy S10

simon · Leave a Comment

Galaxy S10, S10e, S10+, and S10 5G set the standard for the flagship smartphones in 2019. There are many new features and improvements in both hardware and software.

But they are far from perfect. There are some missing features in all 4 Galaxy S10 phones. Some features may also be very disappointing.

This post summarizes the top 10 disappointing and missing features of Galaxy S10.

#1. The most disappointing and missing feature of Galaxy S10: Iris scanner is gone

Iris scanner was first introduced in the explosive Galaxy Note 7. Most owners did not get the chance to try it before the phone was recalled, and re-recalled.

In Galaxy S8 (and S8+), the iris scanner works reasonably well. Many Galaxy S8 owners actually used the iris scanner because of the awkward location of the fingerprint scanner.

Obviously, the iris scanner was improved dramatically in Galaxy S9. It is faster than all other unlocking methods including the fingerprint scanner because of the less-ideal location and smaller size of the fingerprint scanner. If you are using a case or cover for Galaxy S9 or S9, it is not easy to reach the fingerprint scanner.

When more and more owners realized and started to enjoy this unlock feature, Samsung removed it in Galaxy S10.

None of the 4 Galaxy S10 models has the iris scanner.

The reason given by Samsung is the lack of bezel space for the iris scanner.

But if they can punch a hole for the front-facing camera(s), why cannot punch another hole for iris scanner? Here is the Galaxy S1o layout.

#2. The most demanded but missing feature of Galaxy S10: freely remapping Bixby button (key)

Bixby is quite good if you compare it to Siri. But if you compare it to Google Assistant, which is shipped with all Android Pie phones, Bixby is far behind.

But Samsung pushed Bixby so hard that a dedicated hardware Bixby key was introduced in Galaxy S8 and S8+, and all subsequent Galaxy phones get the button below the volume keys.

The most annoying part is that you cannot remap the button for other more useful features. e..g. Launching the camera or using it as a camera shutter button, if you have no intention to use Bixby, or have no intention to use the Bixby button.

In Galaxy S8 and S9, you can disable the Bixby key by letting it do nothing when pressed. If you turn off Bixby Voice in Bixby settings, the long press gesture of the Bixby key will also be deactivated and do nothing.

But in Android Pie update for Galaxy S9, S8, Note 9, and Note 8, Samsung does not allow you to disable Bixby button. You have to choose a single press or double press to launch Bixby. You cannot assign “do nothing” to either of the gesture. Even worse, the long press gesture will always launch Bixby Voice directly. And you cannot turn off Bixby Voice!

In Galaxy S10 … Read the rest “Top 10 disappointing or missing features of Galaxy S10”