If i remember correctly, the Audio works perfekly fine, it was just an issue whit some prototypes, but dont nail me on this because i dont have that much knowledge..
On the Stickers: Some Units are whit Modem, and some arend, how is this get solved as i would suppose you have to print also the Dates from the 4G Modem on the Sticker, or was this allready solved because of the Order Numbers as they are connected to which Unit somewhone want?
Also: Whats happens if the Worker screws the Sticker? is there also a Spare Sticker?
I know from myself, putting Stickers on is not that easy, also when you in hurry because you have to sticker 150 Units this week..