Cell phone on hip for work dangers?

I work in the IT field and we carry our cell phones a lot. I have been carrying my cell phone on my hip for over a year now, a year and four months. I am wondering if anyone knows of any dangers of this. I only am asking because I have had a recent discomfort in my hip, very minor but thought of my cell phone for some reason. I should also mention that I had testicular cancer back in November, but I had it before starting this job and didn't carry my phone much. I could probably get by without carrying it most of the time. Thank you in advance if you read through all this.