1) Read .csv file from phone, 2) Seach for a keyword 'Apple4321' 3) If keyword found, then look for the nearest word if it is 'send' 4) If the word 'send' is found do some action like 'play music'

[Taifun]

It is a bad design choice to use a file as data storage if you have to edit data frequently, because it is cumbersome to work with files

You have to read it completely, edit what you want to edit and save it again...

The question is, why don't you use a database? Depending on the requirements this can be a local sqlite database or if several people need to access it a server database

Taifun