For those that have UPS as the courier, you don't need to worry if you can't track it yet.
For large companies, the UPS tracking codes are generated first through the UPS Worldship software. Then once they print the label it will show on the UPS website. Since they will probably be processing the shipping labels all day, it will show up at some point.
UPS normally only do only one pickup in the day (typically in the evening), when all of the phones will show as collected by UPS together.
Basically, if your order says 19/9, it will be delivered tomorrow regardless of the current status.