"Large scale emergency" and "access to internet" probably, and IMO certainly do not go together.

Assuming that you mostly want information about what is going on, an almost always overlooked source is the old school "shortwave" (HF) radio receiver. They almost always come with AM/FM for local stations, but they will also give you international range to hear voice broadcasts. A small portable unit can be had with AA power at reasonable prices. As with anything, the more features, the higher the price, but even so, less than the retail price of a smartphone.

Every long prep plan should include a shortwave radio receiver. When all else fails, one transmitting station on the other side of the world can get a signal to you via HF.