How to change to 3rd party keyboard in iOS 8 and 9

If you want to change your default keyboard on iOS to the one you like, here is the easy way to do that :

1. Go to the apple store and download the 3rd party keyboard you want. for example fleksy.

2. After the keyboard installed in your device, go to Settings -> General -> Keyboards -> Keyboards

3. Tap "Add New Keyboard..."

4. Next, you'll see the list of 3rd party keyboard you installed. Choose which keyboard you want to use. 

5. When back to the previous screen, Select again the keyboard you choose before and iOS will ask your permission to give full access, Choose Allow.

6. To use your 3rd party keyboard, just use your normal keyboard like you do. when use the keyboard, tap and hold earth symbol to display keyboard list. Select the 3rd party keyboard from the list.