Add this page to your home screen first, then open WATCHMAN FIELD from the home screen and load your pack there.
On an iPhone the home screen app keeps its own storage, so a pack loaded in a Safari tab is not seen by it.
No pack on this phone yet
On your computer, open WATCHMAN, then Settings, DATA, PHONE PACK, and make a pack for your area.
Move the file to this phone (AirDrop or iCloud Drive on an iPhone, a USB cable or a cloud drive on Android).
Tap LOAD PACK FILE below and pick the file.
My area
Center
Area
States
Made
Map data
On this phone
Pack size
Nationwide layers cover your area plus 60 miles. To update, make a new pack on the computer and load it here; it replaces this one.