In all fairness, every step of the process pretty much screamed SCAM.
Of course it does, but many people fall for it.
I did. I was actually expecting two packages (from eBay) although I was expecting them by mail rather than courier (DHL).
But in these times, who knows how packages are actually being transported ?
With only a moment of surprise rather than suspicion, I clicked the link in the text and got to a perfectly 'normal' looking DHL page, with a button to download 'their' Tracking App.
Thank god my Kaspersky AV immediately detected the APK was dangerous and offered just 'Delete' or 'Quarantine' options.
Frightening is that an APP can (easily?) bypass Android controls and access data files of other Apps and other protections.