If your Android phone has an iR transmitter you can use this free app from the Android App store with the smd geiger board programmed to work with Sony iR protocol

If your Android phone has a iR transmitter you can use this free app from the Android App store:

https://play.google.com/store/apps/details?id=org.twinone.irremote

When you install this app then download this custom remote file with your phone Internet browser:

https://www.dropbox.com/s/le0nzbcqohz93zd/impexerisDiYGeiger.remote?dl=0

 and open it (when asked which app to use for opening it choose the app you you have just installed)

note: the above custom remote file is when firmware which is configured to work with Sony 

 system remotes uploaded (this is the default configuration of firmware for boards in this listing)