Golfers elbow, too much phone use?

I was recently diagnosed with golfers elbow, and should be resting my arm, but I think it’s partly being cause because of my shaking arm. I’m trying to hold it still but I think that’s causing the muscles on the inside of my elbow to tighten and clench. That being said it hurts when I hold my phone in my left hand, but I would have thought my right arm would be involved too? Anyway I think I will blog more on my pc and rest my arm. Isn’t life wonderful?!