alt Hacker NewsI used to run a company (2010-2018) where our customers were almost always using our product inside of grocery stores, which are almost always metal sheds with some finishings on the walls. Not so great for cell service, it became essential for us to support offline mode if we wanted to keep those customers happy and engaged.
I spent many late nights trying to debug reachability bugs. It's frankly a nightmare trying to build a reliable app when the user has /some/ cell service, but not enough to operate the app reliably.
Gosh, having tried to use the Home Depot app (to find products in store) while IN their stores... It's so bad. I can't even imagine what you dealt with in trying to handle those things.
(And so, so many little bugs in my map thing from upthread were these odd timing quirks when a user didn't have good service and one check would run and leave something else hanging resulting in a blank map. <sigh>)