Change text size in autodetected fields

I filled out a document where adobe automatically detected the fields and allowed me to enter text on my phone. The boxes were too small for all of the text. I can't seem to change the text size to make it fit. I can change the text size on a text field that I create. I can edit the text I had inputed into the autodetected fields (and add more text to different fields on my computer). But I can't change the font or size or color (or anything) for the text in the automatically detected fields.