✗ How likely is it that anything satellite-related would still work, most importantly cell phones and GPS?
✗ Could you still access the Internet, either via computers or by phone?
I tried different search terms, like end of times satellite availability, internet availability etc - nothing useful.
The main problem is that if you google anything with zombie or invasion in it - you get a either links to fun trivia, video games or survival guides (some of which just assume that modern communication would be working flawlessly in such a case).
WOW, so many great responses. Thank you all so much for your input, comments and links!