Nowadays, large touch screens are popular in mobile phones, and the keys of mobile phones are reduced to single digits from the previous Jiugongs and even the qwerty layout. The keys of mobile phones are also crucial. Even the simplest and most extreme iPhone needs a physical home key to support the realization of various functions. Android phones have more buttons, including three buttons, four buttons, and virtual buttons in recent years. How many touch screen phone buttons do you know?

This article mainly introduces the buttons on the front of some touch screen mobile phones. The more conventional key, volume key and camera key will not be explained in detail.

iPhone

The iPhone's home key is a very classic design, which brings Apple's simple style to the extreme, and the iPod's turntable design at that time is also a classic. The home key of iPhone has three functions. Click it to return to the desktop as the name implies, double-click it to display the task menu, and long press it to display voice control or siri 。 Also, because iPhone has only one physical button, this button is often used. Many Apple users find that after using this button for a period of time, it does not work, and some even die. (Advantages: simple and beautiful. Disadvantages: life expectancy is worrying.)

Double click to display the task list

Press and hold to display siri

Because the home key is too burdensome, Apple has developed a virtual key However, this virtual key also has a disadvantage, that is, it occupies too much space and cannot be hidden automatically. (Advantages: prolong the life of the home key. Disadvantages: occupy too much screen position.)

Android

The key layout of Android is much more colorful. Typical examples include the trackball+entity key of T-Mobile G1 at the beginning of Android, the optical navigation key+entity key of HTC Legend later, and the four touch keys of Motorola Milestone that have a great impact on the later machines. In particular, Milestone's four touch keys have been used in Android phones for a long time, even called the "Four King Kong", but their positions may be changed.

T-Mobile G1 has dial and hang up keys. The key layout is slightly complicated. The trackball is prone to yellowing after long use, and the probability of failure is high.

HTC Legend, which omits the dial and hang up keys, has physical "Four King Kong" and optical navigation keys.

Motorola Milestone, the four King Kong adopt touch design. (Advantages: more functions. Disadvantages: not beautiful enough.)

Because the search key is not so commonly used, and because of the openness of Android, many users have changed it to the lock screen function. To obtain root permission, modify the system file later.

Android 4.0 regulates touch keys , has become the "Three King Kong", from left to right are the return key, home key and multi task management key. (Advantages: specification is conducive to the unification of the platform. Disadvantages: multi task keys are slightly redundant, and can be replaced by long pressing home.) The Galaxy Nexus, the first Android 4.0 mobile phone, is a typical example of this design.

However, because many users do not like that virtual keys occupy a large part of the mobile phone screen, there are various "full screen assistant" software, such as ZTE U985. (Advantages: full screen is used. Disadvantages: some software cannot be hidden automatically.)

Of course, due to the continuous development of the system, the virtual keys have been constantly modified, and users can change the location, size and function at will.

Also because of the three key specification of Android 4.0, the design of three touch keys is derived from many mobile phones. For example, many Huawei models use the design of return key, home key and menu key.

Samsung's has its own characteristics. The home key is a physical design and returns to the right. (Advantages: the home key can be used to wake up the screen. Disadvantages: the home key is an entity, and its life is worrying)

Windows Phone

Because Microsoft has many mandatory regulations on Windows Phone from hardware to software , so the key layout of Windows Phone is very similar, and the change is nothing more than the difference between the home key and the physical key. Among them, the WP7 generation computer can also customize the function of the search key after cracking the machine.

Entity home key

Touch the home key

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