I'm hoping that, if you do use compressed/canned air, you do it from a distance and not up very close to the device.
We've seen reports of debris and dust being blown into the phone, even under the screen, into the camera lens and even into the charging port and causing all sorts of issues to crop up (dust under the screen, dead pixels, scratchy sound, poor battery charging or issues moving files through the data cable, blemishes in pics, etc).
I'd never use canned air on a phone, preferring to play it safe with special soft cloths made for the purpose and available at Best Buy, etc.