Self-employed

You've provided guidance to modify the tax form directly, but I'm using the TT Web UI.   The UI provides me with the following options in which to enter expenses. Home Office, Office Expenses, Supplies, Miscellaneous Expenses,  + a whole lot of other choices.   

 

I'm not familiar with how a TurboTax web app user modifies the form directly, or why this would be the recommend approach.

 

I'm looking for guidance that pertains to the UI.  I assume cell phone bills would go under either Office Expenses or Miscellaneous Expenses.  At present I have them under Office Expenses.  No idea if that translates to your line 9220 or not.