I don't know if this was posted somewhere or if is old news. But I just found out and figured I'll post it in case someone didn't know.
I think this is really cool and convenient.
If you have a shipment and have the tracking number. Write that tracking number on your notes. Once you're done the number should be underlined. Long click the number and a menu will pop up and it will open the website of whatever carrier it is and you can track your shipment.
No more copy/pasting the number and going to the UPS/FEDEX/USPS WEBSITE.