What to do
1
Keep counting
Nothing is lost. Finish the delivery as normal.
2
Save the count
Saving works offline; it stores the count on the phone.
3
Walk back into signal
The count syncs by itself. Watch the banner clear.
4
Then confirm
Confirming the delivery is what books the stock, and that needs a
connection.
The web version of the receiving screen behaves the same way, so a tablet on
the loading bay works as well as a phone.