Same here. On a regular basis I view a couple public Facebook pages from my tablet without signing in. As of yesterday, I have been unable to view them on my tablet for a couple days--I've tried signing in and I still can't view them. I can, however, view them (without signing in) from my laptop.
Weird. And annoying. I wondered if it was an Android thing (since my tablet is Android). It has happened in the past and it usually gets fixed within a day, so hoping it will this time as well.