I use a combination of a conventional phone with FaceTime on an iPad with my 90 years old mother. I call her on the phone (which works much better with her hear

I use a combination of a conventional phone with FaceTime on an iPad with my 90 years old mother. I call her on the phone (which works much better with her hearing aid), and then I connect through FaceTime for the video. If there are any technical issues, I can walk her through them. We have been doing this every evening for the past three months without any insurmountable problems. Having the iPad on a dock helps, as it keeps the orientation constant.