I was wondering the same thing. I don't know about you but I'm not very good with technology, but I am persistent. After playing around I realized you just need to log into Moodle using your phone. Then you upload it through there just like you would on your computer. Super simple, so simple in fact, it made me feel silly not knowing.! Now I have all my due dates at my fingertips on my phone's calendar! Yay!
It's all about the small victories