What is "face-timing" here?
Native speaker’s answer
Rebecca
"Face-timing" refers to video chatting with someone on an iPhone or iPad. The name of this feature is called "FaceTime", hence why using this feature is referred to as "face-timing". The term "face-timing" is informal. Ex: I'm going to face-time my mom this weekend. Ex: Sorry I missed your call, I was face-timing my friend.