Would be very useful if we're able to utilise Input Masking with elements in Powerapps to validate inputs such as mobile phone numbers, postal codes, etc.
Ideally I am thinking this would be a property of an Input field, where we can define the field's "schema", so the user has to meet this in order to submit the item.
Updating status and adding @FilipK
@bloodoff's suggestions are helpful, but we shouldn't have to go to such lengths to replicate basic functionality that exists in other Microsoft products. All I want is to be able to format numbers in currency. The way Excel works would be perfect - i.e. just numbers as you edit, then showing the $, commas, etc when the cell loses focus.