How do I change cover photo on Facebook mobile?

Step 1: Click icon   on the top of your home page.

Step 2: Click View your profile on the top of the page.

Step 3: Click Edit under the big picture.

Step 4: Choose Upload Photo or Select Photo on Facebook.

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How do video call on Facebook app?

Step 1: To have a video or normal call, the prerequisite is that your phone must already install messenger app. If not, you need to download and install it with the following link.:https://itunes.apple.com/us/app/messenger/id454638411?mt=8&ign-mpt=uo%3D2

Step 2: Choose People, and then choose Active. There will be a list of online friends and you just need to choose the one that you want to have a call. 

Step 3: To call your friend, just click on one of the two symbols as below:

Normal call.

Video call.

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