With a keyboard that has received a US patent, you can arrange it in alphabetical order and do not need to memorize the difficult qwerty keyboard, and you can enter it by correcting it without erasing the typo using the front and back character correction keys (B&A keys).
(After downloading the app, setup instructions are at the bottom of the manual.)
[abckeypad input method]
The five vowels ‘a’, ‘e’, ‘i’, ‘o’, ‘u’ that account for 30~40% of the alphabet usage frequency are on the left side of the red keyboard, the consonants between each vowel are assigned a wide area to the alphabets with high usage frequency and arranged in alphabetical order on the right side of the green keyboard, and the function keys are placed on the yellow keyboard and input by pressing and releasing.
After entering the character, press and release the front and back character correction keys (B&A keys) to enter the modified alphabet in the back of the alphabetical order, and press and hold to enter the modified alphabet in front of the alphabetical order to enter it by correcting it without erasing the typo.
Press and hold the shift key to switch to uppercase keypad and press and hold again to switch to lowercase keypad.
Press and release the 1# key to switch to numbers and symbols keypad and press and hold the number key to enter the symbol displayed in the upper right corner. (Premium version)
Press and release the heart key to switch to emoticon keypad.
For European languages with upper- and lower-case letters, press and hold the upper- and lower-case letters of the alphabet, drag them when the modified characters appear around them, and enter them. (Premium version)
Press and hold the enter key to switch to settings (Vibration, Add language).
After installing the app, you can purchase the premium version that allows you to use all functions of the keypad by pressing the blue button at the bottom of the keypad manual. If you delete and reinstall the app as in the case of initializing your phone, you can restore it to the premium version you purchased by pressing the red button next to the blue button.
[How to set up after downloading from Apple App Store]
1. Phone Settings
2. General Setting
3. Keyboards
4. Select abckeypad
5. Allow Full Access
6. Press and hold the globe icon of the Apple keyboard and select the abckeypad.