[cbhl]

I disagree.

Many parts of the world have reasonably accurate weather forecasts for 24-48 hours out -- you'd only need to have five minutes of connectivity at the beginning of the morning; the rest of the day the app should work just fine. And if you're stuck without connectivity for longer, it can show the right part of the 7-day forecast in many locales (albeit with lower certainty). If you need to know the weather _right now_, many phones ship with a barometer sensor, or you can just look out the window.

Sending e-mails was a mostly offline process in most of the 90s; you'd only connect to your dial-up connection to actually send and receive messages to your ISP's SMTP/POP servers.

Facebook already displays old news feed items when you're offline, and with a bit of work, it could decide to cache comments and likes offline when you interact with news feed items. Similarly, it could place photo uploads and status updates in a queue and sync them when the connection does come online.

Amazon predicts items you might want to see based on prior shopping history. While you wouldn't be able to do a search or see real-time pricing/availability information, it could happily show you pictures and product description in a carousel while offline.