How to identify mobile phone piano keyboard

1, iPhone: There is a green button (dialing key) at the bottom of the dialing interface and a gray "dialing keyboard" button on the left. Click it to view the piano numeric keypad.

2. Huawei mobile phone: In the interface of calling and texting, click the three dot icons at the bottom of the screen, and then click the "Numeric Keyboard" option to see the piano numeric keyboard.

3. Xiaomi mobile phone: In the interface of making calls and sending short messages, press and hold the "123" key above the keyboard until the numeric keypad pops up.

4.vivo mobile phone: In the interface of making calls and sending short messages, click the "123" button at the bottom of the screen to see the piano numeric keyboard.