changing the default keyboard which is desplayed in all android apps

[AC Question]

Hi everybody
I want to add some icons to the default android keyboard which is used in all applications such as messaging and be able to change the phone's settings to use my special keyboard as the default in all applications.
To be more specific, I want to add something like the microphone icon for speech to text conversion in English for my own language (Persian). Would anyone please give me a help?
Thanks!

 

[B. Diddy]

Welcome to Android Central! Unless you're good at hacking and programming, you're not going to be able to do that. I suggest checking out the many 3rd party keyboards available on Google Play and seeing if any are close to what you prefer.