A:AnswerYou can receive and answer messages on Facebook but not on any comments or posts it will take you to your phone. I havent tried other apps for that. But you can only reply to someone off Facebook messenger not try to send someone something first off the watch.
A:AnswerThe glass is very strong. The bezel around the glass protects it from direct surface contact. I have a protector on my phone but I'm not going to get one for this watch.
A:AnswerYes you can and make calls from it too! It has a microphone and speaker. Just as long as you're within Bluetooth range if you're getting the non 4G LTE watch.
A:AnswerYes, but would have to purchase a separate plan for that to work. You can answer calls and texts for free with the watch through bluetooth, but would need the phone around you.