Just for an example there are places within 10 miles of Apple HQ with no cell service. It’s simply not worth it to cell providers to guarantee 100 percent cover

Just for an example there are places within 10 miles of Apple HQ with no cell service. It’s simply not worth it to cell providers to guarantee 100 percent coverage in all the valleys in mountainous terrain. Many of the CA state parks have no cell service outside of WiFi at the park HQ. Vast swaths of coastal region has no cell service either, so even people who might just commute or travel a bit might desire the feature.