What Is a Cell Phone Keypad?

The numbers and special symbols on the keys of the mobile phone are combined into shortcut keys with functions such as call forwarding, and the problems and solutions that are prone to the keys of the mobile phone and the materials of the keys are briefly described.

Phone key

Call forwarding, call waiting, pin code modification, etc. on the mobile phone are all on the mobile phone keys. The phone simply sets the code for these instructions. A brief translation, made a menu, easy for users to operate. If the user knows these instructions, he can enter the code directly on the mobile phone.

* # 06 # Mobile IMEI setting query (mobile device identification code)

Call forwarding

** 21 * The phone number you want to transfer to * 10 #

** 21 * The phone number you want to transfer to * 20 #, press Call Key to transfer all incoming call data

** 21 * The phone number you want to transfer to * 12 #

* # 21 #, press Call to check the status of all incoming calls

## 21 #, press call key to cancel all call forwarding

** 61 * The phone number you want to transfer to * 10 * Number of seconds to wait #

** 61 * The phone number you want to transfer to * 20 * The number of seconds to wait #

** 61 * The phone number you want to transfer to * 10 * Number of seconds to wait #

* # 61 #, press call to check the status of no answer transfer

## 61 #, press call key to cancel no answer transfer

** 62 * The phone number you want to transfer to * 10 #

** 62 * The phone number you want to transfer to * 20 #

** 62 * The phone number you want to transfer to * 12 #

* # 62 #, press the call key to check the unavailable transfer status

## 62 #, press Cancel to cancel the unreachable transfer

** 67 * The phone number you want to transfer to * 10 #, press the call to meet the busy voice transfer

** 67 * The phone number you want to transfer to * 20 #, press the call key to busy data transfer

1. The keys do not work. Most of the keys on the mobile phone are dirty or oxidized. Just clean them.

2. It is also possible that the interface between the keyboard and the motherboard has a soldering phenomenon.

Mobile phone buttons include three types: silicone buttons, p + r buttons, and plastic buttons. At first, traditional mobile phones used plastic buttons. Compared with silicone buttons and p + r buttons, plastic buttons have a relatively large disadvantage. Life is much shorter than silicone keys and p + r keys. The life of plastic keys is about 30,000 clicks, while silicone keys and p + r keys are more than 200,000 clicks, and plastic keys are not flexible. Therefore, if plastic products are to be made into buttons, they need to be combined with other accessories in order to become a button, which is composed of a metal spring, so it is convenient to use without p + r buttons and mobile phone buttons.