How to Use Facebook Groups from Your Mobile Phone
If you use a smartphone, you can download the Facebook App for your phone, which allows you to use most Facebook features on the go, including Facebook Groups. To get to a Facebook group from your mobile or tablet app, follow these steps:
Tap the menu icon in the upper-left corner of the screen.
This expands the left-hand menu. Scroll down to look at the list of groups.
Tap the name of the group you want to check out.
This brings you to the group’s mobile Home page. It’s actually not all that different from the regular view of groups. You see all the group’s recent posts.
When you’re looking at a post, you can tap on the post or the gray text at the bottom listing the number of comments to see all the comments that have been made. You can tap the Like button to like the post, or the Comment button to add your own comment.
Tapping a photo focuses the screen on just the photo. You can then use your normal finger shortcuts to zoom in and out for a better view of that photo.
When you’re looking at the group’s recent posts, you can choose to add a post from your mobile phone by tapping the Post button at the top of the page. Tap the Photo button to post a photo from your phone. Just like creating a post anywhere on Facebook, you can add tags and location information.